Chronic Myeloid Leukaemia Patients with Stable Molecular Responses (at least MR3) May Safely Decrease the Dose of Their Tyrosine Kinase Inhibitor: Data from the British Destiny Study

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 938-938 ◽  
Author(s):  
Richard E. Clark ◽  
Fotios Polydoros ◽  
Jane F. Apperley ◽  
Christopher Pocock ◽  
Graeme Smith ◽  
...  
Keyword(s):  
Side Effects ◽  
Chronic Myeloid Leukaemia ◽  
Board Of Directors ◽  
Research Funding ◽  
Kinase Inhibitor ◽  
Standard Dose ◽  
Molecular Response ◽  
Advisory Committees ◽  
Molecular Responses ◽  
Tki Treatment

Abstract Several studies have established that some chronic myeloid leukaemia (CML) patients with enduring deep molecular responses to tyrosine kinase inhibitor (TKI) therapy can discontinue treatment. However, these studies are confined to patients in stable MR4, i.e. whose BCR-ABL/ABL ratio is consistently below 0.01% (molecular response 4 logs below an arbitrary baseline). Although there are anecdotal reports of successful treatment cessation for a few months in patients in stable MR3 (i.e. BCR-ABL <0.1%; major molecular response) but not MR4, e.g. during pregnancy, such patients have not hitherto been formally studied in a stopping trial. In addition, we questioned whether some patients who experience molecular recurrence on stopping TKI might nevertheless be able to safely decrease TKI treatment without molecular recurrence. In the British De-Escalation and Stopping Therapy with Imatinib, Nilotinib or sprYcel (DESTINY) study, patients in at least stable MR3 (on the International Standard) initially decreased their TKI to half the standard dose for 12 months, followed by complete cessation. Key entry requirements included first chronic phase of CML; receiving the same TKI since original diagnosis (except that one switch was permissible if for intolerance to the initial drug); on TKI for at least 3 years; all PCR tests in the past 12 months were in at least MR3 (minimum of 3 tests, each with >10,000 ABL control transcripts). Central monitoring was carried out monthly. Molecular recurrence was defined as loss of MR3 (>0.1%) on two consecutive samples; this prompted resumption of full dose of their entry TKI. Between December 2013 and April 2015, 174 patients (male 98; female 76) were recruited after giving informed consent from 20 UK centres. At entry, 148 patients were receiving imatinib, 16 nilotinib and 10 dasatinib. After 12 months of half-dose therapy (imatinib 200mg daily, nilotinib 200mg twice daily or dasatinib 50mg daily), molecular recurrence was lower in patients with stable MR4 at entry (3 of 125 patients; 2.4%) than in those in MR3 but not MR4 (9 of 49 patients; 18.4%) (p < 0.001). The median time to relapse was shorter in the sustained MR3 group than in those in sustained MR4 at entry (4.4 months vs 8.7 months). The probability of molecular recurrence on de-escalation was not related to age, gender, performance status, prior TKI (imatinib vs second generation) or the duration of TKI therapy (median 7.0 years overall). No progression to advanced phase or loss of cytogenetic response was seen; one death and 15 serious adverse events occurred which were all unrelated to CML or TKI treatment. All 12 patients with molecular recurrence regained MR3 within 4 months of resumption of full dose TKI. During the first 3 months of de-escalation but not thereafter, the number of patient-reported common TKI side effects decreased, though interestingly 53 new musculoskeletal symptoms were reported by 36 patients (21%) which were typically mild and transient. In CML patients with stable MR3 or better, decreasing TKI treatment to half the standard dose appears safe, and is associated with improvement in TKI related side effects, implying that many patients with stable responses are being overtreated. Studies of more ambitious de-escalation are warranted. Disclosures Clark: Ariad: Honoraria; Novartis: Honoraria, Research Funding, Speakers Bureau; Bristol Myers Squibb: Honoraria, Research Funding, Speakers Bureau; Pfizer: Honoraria, Research Funding, Speakers Bureau. Apperley:Novartis: Honoraria, Speakers Bureau; Incyte: Speakers Bureau; Pfizer: Honoraria, Speakers Bureau; Bristol Myers Squibb: Honoraria, Speakers Bureau; Ariad: Honoraria, Speakers Bureau. Pocock:Gilead Sciences: Other: Sponsorship to attend the EHA 2016 Meeting; Janssen: Speakers Bureau; Takeda: Honoraria. Smith:Bristol Myers Squibb: Honoraria; Novartis: Honoraria; Pfizer: Honoraria; Ariad: Honoraria. Byrne:Bristol Myers Squibb: Consultancy, Speakers Bureau. O'Brien:Ariad: Consultancy, Honoraria, Research Funding; Bristol Myers Squibb: Consultancy, Honoraria, Research Funding; Novartis: Consultancy, Honoraria, Research Funding; Pfizer: Consultancy, Honoraria, Research Funding. Copland:Novartis: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Amgen: Honoraria; Pfizer: Honoraria, Membership on an entity's Board of Directors or advisory committees; Shire: Honoraria; Bristol Myers Squibb: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; ARIAD: Honoraria, Membership on an entity's Board of Directors or advisory committees.

scholarly journals Second Imatinib Discontinuation Outcomes in Patients Regaining Durable Deep Molecular Response in the Korean Imatinib Discontinuation Study; KID Study

Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 51-52
Author(s):  
Sung-Eun Lee ◽  
Joon Seong Park ◽  
Young Rok Do ◽  
Sung-Hyun Kim ◽  
Dae Young Zang ◽  
...  
Keyword(s):  
Prospective Study ◽  
Board Of Directors ◽  
Median Duration ◽  
Research Funding ◽  
Kinase Inhibitor ◽  
Molecular Response ◽  
Close Monitoring ◽  
Advisory Committees ◽  
Deep Molecular Response ◽  
Multicenter Prospective Study

Backgroud: Although multiple trials have shown that stopping tyrosine kinase inhibitor (TKI) treatment can be employed in CP CML patients with sustained deep molecular response (DMR) after enough TKI therapy, they emphasized the need for close monitoring because about 50-70% of patients experienced molecular relapse. However, most patients with molecular recurrence regain their initial molecular level after restarting TKI therapy. Aims: In this study, we analyzed second imatinib (IM) discontinuation outcomes in patients regaining durable DMR in the Korean multicenter prospective study (Korean Imatinib Discontinuation Study; KID Study) Methods: CP CML patients who were treated with IM for more than 3 years and maintained DMR for at least 2 years were eligible for the Korean multicenter prospective study and in cases of MMR loss on 2 consecutive assessments, IM treatment was re-introduced. After IM resumption, the molecular response was evaluated every month until re-achievement of MMR and every 3 months thereafter. The second stop was permitted in the patients who were in second DMR for at least 2 years. Results: Among the patients who maintained a second DMR for at least 2 years after IM resumption, 23 patients entered into a second IM stop. Prior to first discontinuation, the median duration of IM therapy was 73.2 months (range, 38.4-133.2 months) and the duration of sustained UMRD was 38.4 months (range, 24-102 months). After first attempt of IM discontinuation, they relapsed after a median duration of 3.7 months (range, 1.8-20.8 months) and re-achieved UMRD at a median of 5.8 months (range, 1.7-12.1 months) after IM resumption. After sustaining a second DMR for a median of 26.3 months, IM therapy discontinued for a second time. With a median follow-up of 29.5 months (range, 9-63 months) since second IM stop, 15/23 patients (65%) lost MMR after a median 2.9 months (range, 1.8-30.7 months), which was similar to those of the first IM discontinuation [median 3.7 (range, 1.8-20.8 months)]. The patients who lost MMR were retreated with IM for a median of 24.5 months (range, 1.2-49.7 months); 14 patients re-achieved MMR and one patient was in therapy for 1.2 months. Conclusion: Our data demonstrated that a second attempt might be possible and the median time to MMR loss after second discontinuation was similar to those of the first discontinuation. Further studies on the predictors to select patients for a trial of second TFR and novel strategies will be warranted. Disclosures Kim: Takeda: Research Funding; Novartis: Consultancy, Honoraria, Research Funding, Speakers Bureau; ILYANG: Consultancy, Honoraria, Research Funding; Pfizer: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; BMS: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Sun Pharma.: Research Funding.

Switching to Nilotinib Is Associated with Continued Deeper Molecular Responses in CML-CP Patients with Minimal Residual Disease After ≥ 2 Years On Imatinib: Enestcmr 2-Year Follow-up Results

Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 694-694 ◽  
Author(s):  
Timothy P. Hughes ◽  
Jeffrey H. Lipton ◽  
Nelson Spector ◽  
Brian Leber ◽  
Ricardo Pasquini ◽  
...  
Keyword(s):  
Board Of Directors ◽  
Minimal Residual Disease ◽  
Research Funding ◽  
Residual Disease ◽  
Molecular Response ◽  
Advisory Committees ◽  
Molecular Responses ◽  
The Difference ◽  
Minimal Residual

Abstract Abstract 694 Background: Superior rates of deeper molecular responses were achieved with nilotinib vs imatinib in patients newly diagnosed with Philadelphia chromosome–positive (Ph+) chronic myeloid leukemia in chronic phase (CML-CP) in the Evaluating Nilotinib Efficacy and Safety in Clinical Trials—newly diagnosed patients (ENESTnd) trial. In addition, the 12-month (mo) analysis of the ENEST—complete molecular response (ENESTcmr) study demonstrated that switching to nilotinib after a minimum of 2 years on imatinib led to increased rates of major molecular response (MMR) and deeper molecular responses vs remaining on imatinib. Results from ENESTcmr are presented here with minimum 24 mo of patient follow-up. Methods: Patients with Ph+ CML-CP who had achieved complete cytogenetic responses but still had persistent BCR-ABL positivity by real-time quantitative polymerase chain reaction (RQ-PCR) after ≥ 2 years on imatinib were eligible. Patients (n = 207) were randomized to switch to nilotinib 400 mg twice daily (BID; n = 104) or to continue on the same dose of imatinib (400 or 600 mg once daily [QD]; n = 103). Rates of MMR, MR4 (BCR-ABL ≤ 0.01% according to the International Scale [IS], corresponding to a 4-log reduction), MR4.5 (BCR-ABL ≤ 0.0032%IS, corresponding to 4.5-log reduction), and undetectable BCR-ABL via RQ-PCR with ≥ 4.5-log sensitivity were measured. Results: Among all randomized patients (intent-to-treat population), significantly more patients treated with nilotinib continued to achieve undetectable BCR-ABL by 24 mo (32.7% on nilotinib vs 16.5% on imatinib; P =.005; Table).The difference between the arms in achievement of this endpoint increased between 1 and 2 years (from 12.4% to 16.2%). The median time to MR4.5 and undetectable BCR-ABL was also significantly faster on nilotinib than on imatinib (P = .005 and .003, respectively). Cumulative rates of MR4.5 and undetectable BCR-ABL continued to be higher with nilotinib in patients without those responses at baseline, and the difference between arms appeared to increase over time. The safety profiles for nilotinib and imatinib were consistent with prior studies. By 24 mo, no patients in either arm progressed to accelerated phase/blast crisis. No patients on nilotinib died since the 12-mo analysis; 1 patient on imatinib died from metastatic prostate cancer in follow-up after discontinuation from the study. Conclusions: Switching to nilotinib led to significantly faster, deeper molecular responses in patients with minimal residual disease on long-term imatinib therapy. Since the 12-mo analysis, rates of deep molecular response (MR4.5 and undetectable BCR-ABL) have remained significantly higher in patients who did not have the response at baseline and were switched to nilotinib (vs those remaining on imatinib). In fact, the difference in favor of nilotinib increased between 1 and 2 years. These results suggest that switching to the more potent, selective tyrosine kinase inhibitor nilotinib is beneficial in patients with minimal residual disease after long-term imatinib therapy. Achievement of these deeper molecular responses (MR4.5 and undetectable BCR-ABL) after switching to nilotinib may enable a greater proportion of CML-CP patients to be eligible for future discontinuation studies. Cumulative rates of confirmed undetectable BCR-ABL by 24 mo will be presented as the confirmation assessments for several responders were not available at the time of this analysis. Disclosures: Hughes: Novartis Pharmaceuticals Corp: Consultancy, Honoraria, Research Funding; Bristol Myers Squibb: Consultancy, Honoraria, Research Funding; Ariad: Consultancy; CSL: Research Funding. Lipton:Novartis: Consultancy, Research Funding, Speakers Bureau. Spector:Novarits: Membership on an entity's Board of Directors or advisory committees, Research Funding; BMS: Consultancy. Leber:Novartis: Advisory Board Other, Honoraria, Speakers Bureau. Schwarer:Novartis: Honoraria, Membership on an entity's Board of Directors or advisory committees; BMS: Honoraria, Membership on an entity's Board of Directors or advisory committees; Pfizer: Honoraria, Membership on an entity's Board of Directors or advisory committees. Etienne:Novartis: Consultancy, Speakers Bureau; Pfizer: Consultancy; BMS: Consultancy, Speakers Bureau. Branford:Novartis: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; BMS: Honoraria, Research Funding; Ariad: Research Funding. Purkayastha:Novartis Pharmaceuticals Corp: Employment. Collins:Novartis Pharmaceuticals Corp: Employment. Szczudlo:Novartis Pharmaceuticals Corp: Employment. Cervantes:Novartis: Membership on an entity's Board of Directors or advisory committees; Sanofi-Aventis: Membership on an entity's Board of Directors or advisory committees; BMS: Speakers Bureau; Celgene: Membership on an entity's Board of Directors or advisory committees; Pfizer: Membership on an entity's Board of Directors or advisory committees; Teva Pharmaceuticals: Membership on an entity's Board of Directors or advisory committees.

Pegylated Interferon-Alpha 2a in Combination with Nilotinib As First-Line Therapy in Newly Diagnosed Chronic Phase Chronic Myelogenous Leukemia (Nilopeg trial). Four-Year Follow-up Results

Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 1578-1578 ◽  
Author(s):  
Franck E. Nicolini ◽  
Gabriel Etienne ◽  
Viviane Dubruille ◽  
Lydia Roy ◽  
Françoise Huguet ◽  
...  
Keyword(s):  
Board Of Directors ◽  
Cumulative Incidence ◽  
Research Funding ◽  
Chronic Phase ◽  
Pegylated Interferon ◽  
Molecular Response ◽  
Advisory Committees ◽  
Molecular Responses ◽  
Log Reduction

Abstract Background & aims In the Nilopeg trial (EudraCT 2010-019786-28), we have previously demonstrated that the combination of nilotinib (Tasigna® Novartis), a second generation inihibitor (TKI2), combined to pegylated interferon-alpha 2a (Peg-IFN, Pegasys®, Roche) in de novo chronic phase chronic myeloid leukemia (CP-CML) patients is able to induce high rates of molecular responses with an acceptable additional toxicity (F. E. Nicolini et al. Lancet Haematology 2015) within 24 months of follow-up. We report here the ≥4-year follow-up of such patients for toxicity and efficacy. Methods In a phase 2 study, newly diagnosed CP-CML patients were assigned to a priming strategy by Peg-IFN (± HU) for a month at 90 mg/wk, prior to a combination of nilotinib 300 mg BID + Peg-IFN 45 micro.g/wk for ≥ 1 year, maximum 2 years. After 2 years nilotinib was continued alone. The primary endpoint was the rate of confirmed molecular response 4.5 (MR4.5) by 1 year. Molecular assessments were centralised for all patients and expressed as BCR-ABLIS in % for 2 years and then performed in each center [all expressed in % on the international scale (IS)]. All data presented here are in intention-to-treat. Events were defined as death, progression to AP or BC, failure on nilotinib or nilotinib treatment discontinuation for any cause excluding treatment-free remission (TFR). Results Fourty-two patients were enrolled in this trial (one withdrawn its consent prior to treatment initiation), and the median follow-up is now 50.7 (47.8-52.8) months. Sokal and Euro scores were high for 12% and 2%, intermediate for 49% and 55% and low for 39% and 43% of the patients respectively. The median age at treatment initiation was 53 (23-85) years, 2 patients had a masked Philadelphia chromosome, 3 a variant form, and 1 additional chromosomal abnormalities, all patients had "major" BCR-ABL1 transcripts. The rates of Complete Cytogenetic Responses (CCyR) at "6", and "12" months of combination (i. e. at 5 and 11 months of TKI2) were 71%, and 100% respectively. Eighty seven percent of patients had a BCR-ABLIS ≤10% at M3 (i. e. after 2 months TKI). The rates of molecular responses respectively at 12, 24, 36 and 48 months were 76%, 78%, 83%, 73% for MMR, 51%, 58.5%, 66%, 58.5% for 4 log reduction (MR4), 17%, 34%, 34%, 44% for 4.5 log reduction (MR4.5), 12%, 32%, 29%, 41.5% for ≥5 log reduction (MR5), shown as cumulative incidence curves for MR4.5 in figure 1. The median doses of Peg-IFN delivered to the patients during the first year were 45 (0-45) micro.g/wk, and for nilotinib 600 (300-600) mg daily. Interestingly, logistic regression analysis adjusted on MR4.5 responses showed a significant relationship with the mean doses of Peg-IFN delivered to the patients at 12 months (p=0.003, OR = 1.09 [1.03-1.16]), 24 months (p=0.005, OR = 1.08 [1.02-1.14]) and 48 months (p=0.024, OR = 1.09 [1.01-1.17], but not with the mean doses of nilotinib [p=0.84, OR = 0.99 [0.99-1.01], p=0.087, OR = 1 [0.99-1.01], and p=0.88, OR = 1 [0.99-1.01] respectively. Eight patients (19.5%) were in TFR for a median of 6.8 (0.5-9.5) months after 2-year consecutive MR4.5, and none lost MMR yet at last follow-up. One patient died of progression (unmutated myeloid blast crisis at M6, who relapsed after unrelated allogeneic stem cell transplantation). There was no additional grade 3-4 hematologic or biochemical toxicities occurring after 24 months. At last follow-up 10 patients switched for another TKI (2 for dasatinib, 5 for imatinib, and 3 for imatinib followed by dasatinib), for unsufficient cytogenetic or molecular response (2 patients) or for toxicity (7 patients). Overall, 4 patients presented some cardio-vascular events 3 coronary stenoses, one brain stroke). Conclusion Despite additional initial toxicities Peg-IFN priming strategy, followed by the combination of nilotinib and Peg-IFN during the first year induces very high rates of durable deep molecular responses (MR4 and MR4.5) at later time-points, offering TFR for number of patients. To date, no emerging severe adverse events occurred. However, to confirm these promising results, a randomised phase III study testing nilotinib versus nilotinib + Peg-IFN is absolutely warranted and in progress. Figure 1. Cumulative incidence of MR4.5 Figure 1. Cumulative incidence of MR4.5 Disclosures Nicolini: Novartis: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Bristol-Myers Squibb: Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Ariad Pharmaceuticals: Honoraria, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau. Etienne:ARIAD: Consultancy, Honoraria, Speakers Bureau; Novartis: Consultancy, Honoraria, Other: Congress Travel/Accomodations, Research Funding, Speakers Bureau; BMS: Consultancy, Honoraria, Speakers Bureau. Roy:BMS: Consultancy, Research Funding; Novartis: Consultancy, Research Funding. Huguet:Novartis: Consultancy, Research Funding; BMS: Consultancy, Speakers Bureau; ARIAD: Consultancy, Speakers Bureau; PFIZER: Consultancy, Speakers Bureau. Legros:ARIAD: Speakers Bureau; BMS: Speakers Bureau; Novartis: Research Funding, Speakers Bureau. Giraudier:Novartis: Speakers Bureau. Coiteux:BMS: Speakers Bureau; ARIAD: Speakers Bureau; Novartis: Speakers Bureau. Guerci-Bresler:ARIAD: Speakers Bureau; BMS: Speakers Bureau; Novartis: Speakers Bureau; PFIZER: Speakers Bureau. Rea:Pfizer: Honoraria; Ariad: Honoraria; Novartis: Honoraria; Bristol-Myers Squibb: Honoraria. Amé:BMS: Speakers Bureau; Novartis: Speakers Bureau. Cony-Makhoul:Novartis: Consultancy, Honoraria, Speakers Bureau; BMS: Consultancy, Honoraria, Speakers Bureau. Gardembas:Novartis: Speakers Bureau. Hermet:Novartis: Speakers Bureau; BMS: Speakers Bureau. Rousselot:Pfizer: Consultancy; BMS: Consultancy, Speakers Bureau; Novartis: Speakers Bureau. Mahon:ARIAD: Consultancy; Bristol-Myers Squibb: Consultancy, Honoraria; Pfizer: Consultancy; Novartis: Consultancy, Honoraria.

scholarly journals For Patients with Sustained MR4-MR4.5, Less Frequent Molecular Monitoring during the First 12 Months after Tyrosine Kinase Inhibitor Cessation Is Viable for Timely Detection of Loss of MMR

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 1890-1890
Author(s):  
Naranie Shanmuganathan ◽  
Susan Branford ◽  
Jodi Braley ◽  
Devendra Hiwase ◽  
David T. Yeung ◽  
...  
Keyword(s):  
Tyrosine Kinase ◽  
Tyrosine Kinase Inhibitor ◽  
Board Of Directors ◽  
Median Time ◽  
Research Funding ◽  
Kinase Inhibitor ◽  
Molecular Response ◽  
Monitoring Strategy ◽  
Molecular Monitoring ◽  
Advisory Committees

Abstract Background: Discontinuation of tyrosine kinase inhibitor (TKI) treatment for chronic myeloid leukaemia (CML) patients in stable deep molecular response leads to treatment-free remission (TFR) in approximately 50% of cases. In most studies, monthly PCRs was performed for 12 months followed by 2-3 monthly testing thereafter. Around 80% of molecular relapses occur within the first 6 months after TKI cessation. The current recommendation for TKI recommencement is a single BCR-ABL1 value ≥0.1% IS (International scale), indicating loss of major molecular response (MMR). Not all institutions can offer monthly PCR monitoring due to financial constraints, particularly relevant in developing countries. For some patients, remaining on TKI is a cheaper alternative. Aim: To assess the safety of less frequent BCR-ABL1 monitoring for detection of loss of MMR for CML patients attempting TFR. Methods: We monitored 85 patients who ceased TKI with the aim of achieving TFR. Patients had a minimum of 24 months of sustained MR4 (n=3) or MR4.5 (n=82) prior to TKI cessation. At the time of TKI cessation, 64 patients were on imatinib (75%), 17 on nilotinib (20%) and 4 on dasatinib (5%). Forty of the patients were enrolled in the TWISTER study where the criteria for TKI recommencement was loss of MMR or 2 consecutively rising BCR-ABL1 positive values. The remaining patients were on a registry study and the trigger for TKI recommencement was loss of MMR. Results: TKI recommencement occurred in 49 of 85 patients. Median time to TKI recommencement was 4 months (range 2-28 months) at a median BCR-ABL1 value of 0.27% on the International Scale (IS), range 0.002-24% IS. Thirty-six of the 49 patients (73%) lost MMR prior to TKI recommencement; the median time to loss of MMR was 3 months (range 1 to 10 months). One patient lost MMR within the first month. Figure A demonstrates the time to loss of MMR in the 36 patients with PCR values ≥ 0.1%. Eighteen of the 36 patients (50%) lost MMR by the 3 month BCR-ABL1 assessment and 35 of 36 patients (97%) lost MMR by 6 months. The latest loss of MMR was at 10 months. Fourteen patients recommenced TKI at a BCR-ABL1 value of >1% and 1 recommenced at a value >10%. Clinician delay in TKI recommencement of 1 month resulted in a BCR-ABL1 rise from 0.84% to 24% with associated loss of complete hematological response. We propose monthly BCR-ABL1 testing between 2 and 6 months post TKI cessation followed by 2 monthly testing. Detection of a BCR-ABL1 value of ≥0.1% would trigger TKI recommencement. In the presence of a rising BCR-ABL1, which remains ≤0.1%, monthly monitoring should ensue in order to avoid hematological relapse. If this strategy were employed in this cohort of patients, only 1 patient would have had the trigger for TKI recommencement delayed by 1 month (estimated BCR-ABL1 at recommencement ~2.5%). This patient had loss of MMR in the first month post TKI cessation. If this molecular monitoring strategy was applied to patients in our cohort who had not lost MMR at TKI recommencement, we estimate that 1 other patient would have had TKI recommencement delayed by 1 month based on the average BCR-ABL1 doubling time of 1 log per month. A proportion of patients maintain low levels of BCR-ABL1 after TKI cessation and do not lose MMR. There were 2 such patients in our cohort. Conclusion: The critical time for molecular monitoring to trigger TKI recommencement is the first 6 months. A monthly monitoring strategy beginning 2 months after cessation would capture the majority of patients at loss of MMR. The data suggest that after 6 months, 2-monthly monitoring could follow. Monthly BCR-ABL1 testing can be re-introduced in the event of a positive result in those that ceased TKI with undetectable BCR-ABL1 or if there is a BCR-ABL1 result higher than the cessation value. This approach would reduce BCR-ABL1 testing by approximately 33% in the majority of cases while minimizing hematological relapse. Therefore this strategy would reduce the cost and inconvenience of molecular monitoring for a trial of TKI cessation, making the option of TFR available to some patients for whom it is otherwise not feasible. Disclosures Branford: Qiagen: Honoraria, Membership on an entity's Board of Directors or advisory committees; Cepheid: Consultancy; Ariad: Research Funding; Bristol Myers Squibb: Research Funding; Novartis: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding. Yeung:BMS: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Novartis Pharmaceuticals: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Ariad: Research Funding. Ross:Novartis Pharmaceuticals: Honoraria, Research Funding; BMS: Honoraria. Hughes:Bristol-Myers Squibb: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Ariad: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Novartis Pharmaceuticals: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Australasian Leukaemia and Lymphoma Group (ALLG): Other: Chair of the CML/MPN Disease Group.

Enestnd 4-Year (y) Update: Continued Superiority of Nilotinib Vs Imatinib in Patients (pts) with Newly Diagnosed Philadelphia Chromosome–Positive (Ph+) Chronic Myeloid Leukemia in Chronic Phase (CML-CP)

Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 1676-1676 ◽  
Author(s):  
Hagop M. Kantarjian ◽  
Dong-Wook Kim ◽  
Surapol Issaragrisil ◽  
Richard E Clark ◽  
Josy Reiffers ◽  
...  
Keyword(s):  
Board Of Directors ◽  
Research Funding ◽  
Standard Of Care ◽  
Molecular Response ◽  
Newly Diagnosed ◽  
Advisory Committees ◽  
Molecular Responses ◽  
The Difference ◽  
The Impact

Abstract Abstract 1676 Background: Pts treated with nilotinib in the ENESTnd phase 3 trial achieved higher and faster rates of major molecular response (MMR, ≤ 0.1% BCR-ABLIS), deeper molecular responses (MR4, ≤ 0.01%IS and MR4.5, ≤ 0.0032%IS), significantly lower rates of progression to accelerated phase/blast crisis (AP/BC), and fewer CML-related deaths compared with imatinib by 1, 2, and 3 y. Here, we report data with a minimum follow-up of 3 y; efficacy and safety data based on longer follow-up of 4 y will be presented to further assess the impact of nilotinib vs imatinib in pts with newly diagnosed Ph+ CML-CP. Methods: Adult pts (N = 846) with newly-diagnosed Ph+ CML-CP were randomized to nilotinib 300 mg twice daily (BID; n = 282), nilotinib 400 mg BID (n = 281), or imatinib 400 mg once daily (QD; n = 283). MMR, MR4, MR4.5, time to progression to AP/BC, progression-free survival (PFS), and overall survival (OS) were evaluated. Results: Significantly higher rates of MMR, MR4, and MR4.5 by 3 y were achieved in nilotinib- vs imatinib-treated pts (Table). Nilotinib led to the achievement of higher rates of molecular responses regardless of Sokal risk group or age. The difference in the rates of both MR4 and MR4.5 continued to be significantly higher for nilotinib, with the difference in favor of nilotinib increasing from 1 to 3 y (MR4: 9%-14% difference by 1 y, 18%-24% difference by 3 y; MR4.5: 6%-10% difference by 1 y, 13%-17% difference by 3 y). Among patients who achieved MMR, more pts achieved MR4 or MR4.5 on nilotinib 300 mg BID (68%) and nilotinib 400 mg BID (62%) compared with imatinib (49%). No pt in any arm progressed after achieving MR4.5. Significantly fewer pts progressed to AP/BC on nilotinib vs imatinib (Table). No new progressions occurred on core treatment between the 2-y and 3-y analyses. When events occurring after treatment discontinuation were included, the rates of progression to AP/BC were also significantly lower with nilotinib vs imatinib (Table). Nearly twice as many pts had emergent mutations on imatinib (n = 21) vs either nilotinib arm (n = 11 in each arm), with 5 pts overall developing mutations between 2 and 3 y. OS remained similar in all groups at 3 y, but fewer CML-related deaths occurred in both the nilotinib 300 mg BID (n = 5) and 400 mg BID (n = 4) arms vs imatinib (n = 14). Both drugs were well tolerated. Few new adverse events (AEs) and laboratory abnormalities were observed between 2 and 3 y. Rates of discontinuation due to AEs were 10%, 14%, and 11% in the nilotinib 300 mg BID, nilotinib 400 mg BID, and imatinib arms, respectively. Conclusions: Nilotinib continues to demonstrate superiority vs imatinib, yielding faster and deeper molecular responses and a significantly decreased risk of progression. Results of ENESTnd support the use of nilotinib as a standard of care option in newly diagnosed adult pts with Ph+ CML-CP and should be considered to replace imatinib as the standard-of-care frontline therapy for patients with Ph+ CML-CP. Disclosures: Kantarjian: Novartis: Consultancy, Research Funding; BMS: Research Funding; Pfizer: Research Funding. Kim:Novartis: Consultancy, Honoraria, Research Funding, Speakers Bureau; BMS: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Pfizer: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; ARIAD: Research Funding; II-Yang: Research Funding. Clark:Novartis: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; BMS: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Pfizer: Honoraria, Membership on an entity's Board of Directors or advisory committees. Reiffers:BMS: Expense reimbursement for travel expenses Other; Novartis: Expense reimbursement for travel expenses, Expense reimbursement for travel expenses Other. Nicolini:Novartis: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; BMS: Honoraria, Research Funding, Speakers Bureau; Ariad: Research Funding, Speakers Bureau; Pfizer: Consultancy, Honoraria. Hughes:Novartis: Consultancy, Honoraria, Research Funding; BMS: Consultancy, Honoraria, Research Funding; Ariad: Consultancy, Honoraria; CSL: Research Funding. Hochhaus:BMS: Consultancy, Honoraria, Research Funding; Pfizer: Consultancy, Honoraria, Research Funding; Novartis: Consultancy, Honoraria, Research Funding; Ariad: Consultancy, Honoraria, Research Funding. Kemp:Novartis Pharmaceuticals Corp: Employment. Fan:Novartis Pharmaceuticals Corp: Employment. Waltzman:Novartis Pharmaceuticals Corp: Employment, Equity Ownership. Saglio:Novartis: Consultancy, Speakers Bureau; BMS: Consultancy, Speakers Bureau; Pfizer: Consultancy. Larson:Novartis: Consultancy, Honoraria, Research Funding; BMS: Consultancy, Research Funding; Pfizer: Consultancy; Ariad: Consultancy, Research Funding.

Very Early Molecular Responses During The First Two Months Of Therapy Are Highly Predicitive Of Deep Molecular Responses In Newly-Diagnosed Chronic Myeloid Leukemia In Chronic Phase( CML-CP) Patients Treated Upfront With Nilotinib. The Spanish Substudy Of The ENEST1st Trial

Blood ◽  
2013 ◽  
Vol 122 (21) ◽  
pp. 5190-5190
Author(s):  
Juan Luis Steegmann ◽  
Luis Felipe Casado Montero ◽  
Maria Teresa Gomez-Casares ◽  
Maria Rozman ◽  
Maria Asunción Echeveste ◽  
...  
Keyword(s):  
Board Of Directors ◽  
Research Funding ◽  
Roc Analysis ◽  
First Trimester ◽  
Significant Variable ◽  
Molecular Response ◽  
Newly Diagnosed ◽  
Advisory Committees ◽  
Molecular Responses ◽  
Independent Variable

Abstract Objectives To analyze the molecular response during the first trimester of nilotinib therapy in newly diagnosed CML-CP patients. Hypothesis The values of BCR-ABL ratios during the first trimester of nilotinib treatment, and the kinetic of their descent, could be predictive of molecular response thereafter. Patients ENEST1st (NCT01061177) is an open-label study of nilotinib 300 mg twice daily in adults with newly diagnosed BCR-ABL+ CML-CP. Imatinib pretreatment was not allowed. Methods BCR-ABLIS and BCR-ABL/GUS ratios were measured previously to nilotinib, and fortnightly thereafter until the 3rd month (m), and at 6, 12 and 18 m. Sokal, Euro and Eutos scores were calculated with data at diagnosis. BCR-ABL values were centrally measured in an ELN-EUTOS certified laboratory. Molecular response was classified by ELN2013 recommendations. As the linearity of values of BCR-ABL using ABL as control is questionable, when ratios are higher than 10%, only baseline BCR-ABL/GUS ratios were used when analyzing the molecular response using GUS as control. The kinetic of the descent was calculated using the ratio of a given time compared with that of an earlier time, and measuring slopes. Logistic regressions and ROC analysis have been used, calculating positive and negative predictive values (PPV and NPV) Results 61 patients were included. 1 patient was excluded of the analysis because of lack of molecular data (baseline). Out of 60 patients, 10 abandoned during the first 18 m because of AE’ s. Those patients have been classified as non-responders after the time they went off-study. Risk distribution: Sokal (L, I, H): 57%, 32%, 11.7% Euro: 52%, 45%, 3%) Eutos (L, H): 92%, 8%). Outcomes and Molecular response: No patient died or transformed during the follow-up. MR4.5 at 18 M has been obtained in 30% of the patients. The ELN 2013 molecular milestones for optimal response at 3,6,12 and thereafter were obtained in 97%, 93%, 83%, and 70%, respectively.(Table) Predictive variables of response: (Table). Major molecular response (²0.1%) (BCR-ABL/ABL, BCR-ABL/GUS). At 3MBaseline BCR-ABL/GUS ratios were significantly different between responders and non-responders (22,1±23,1 vs 41,5± 38,1, p=0.05). For both control genes, the multivariate analysis disclosed that the independent and significant variable was the ratio at 45d. The ROC analysis disclosed a cut-off of 3.28 (PPV: 83% NPV: 80%). [OR: 20(4.4- 90) p<0.00001]. For BCR-ABL/GUS it was 3.5 (PPV: 87% NPV: 73%). At 6M and at 12 M: For both control genes, only the ratio at 3M and the ratio at 6 M were independently associated, respectively. At 18 M; With BCR-ABL/ABL, only the ratio at 12M was the independent and significant variable. Variables associated with MR4.5 at 18 m (BCR-ABL/ABL). The ratios at 1M, 1.5 M, and 2 M were significantly associated with the MR4.5 at 18 M. In the multivariant analysis the only independent variable associated with this response was the BCR-ABL ratio at 2M. The ROC curve disclosed a cut-off of 1.52 (PPV: 91% NPV: 59%). When including this variable as dichotomic, in a multivariant analysis, was the only significant one [OR: 14(3.2-60) P=0.0004)]. The correspondent cut-off at 3M was 0.1 (PPV: 84% NPV: 60%); [OR: 7,7(2.2-27) P=0.001]. Discussion Our results show that, in newly diagnosed patients, nilotinib obtained responses very quickly, and the proportions of patients having an optimal ELN2013 response at 3M (BCR-ABLIS² 10%), and at 6M (BCR-ABL IS ² 1%) were 97% and 93%. For obtaining a MMR at 3M, the only significant cut-off was at 45 d. For subsequent MMR, the only independent variable was the ratio at the most immediate earlier point. Besides, our results show a similar proportion of responses when using GUS as control gene, and similar predictive cut-offs in the ROC analysis of MMR at 3 and 6 M. Nilotinib treatment obtained 30% of MR4.5 at 18M. Ratios at 1M, 1.5 M, and 2 M were significantly associated with this response, but the only independent variable was the BCR-ABL ratio at 2M. At 2 M, having a ratio higher than 1.52 % will be linked with a 91% probability of not obtaining a MR4.5 at 18 M. Disclosures: Steegmann: Pfizer: Honoraria, Research Funding, Speakers Bureau; BMS: Honoraria, Research Funding, Speakers Bureau; Novartis: Honoraria, Research Funding, Speakers Bureau. Casado Montero:Pfizer: Honoraria, Research Funding, Speakers Bureau; BMS: Honoraria, Research Funding, Speakers Bureau; Novartis: Honoraria, Research Funding, Speakers Bureau. Echeveste:Celgene: Consultancy; Novartis: Consultancy. Garcia-Gutierrez:Novartis: Membership on an entity’s Board of Directors or advisory committees; BMS: Membership on an entity’s Board of Directors or advisory committees; Pfizer: Membership on an entity’s Board of Directors or advisory committees. Ruiz:Novartis: Employment. Walasek:Novartis: Employment.

Dynamics of Mutations in Patients with ET Treated with Imetelstat

Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 57-57
Author(s):  
Elisabeth Oppliger Leibundgut ◽  
Monika Haubitz ◽  
Bart Burington ◽  
Oliver G. Ottmann ◽  
Gary Spitzer ◽  
...  
Keyword(s):  
Board Of Directors ◽  
Genetic Instability ◽  
Research Funding ◽  
Triple Negative ◽  
Jak2 V617f ◽  
Driver Mutation ◽  
Molecular Response ◽  
Advisory Committees ◽  
Molecular Responses ◽  
Tp53 Mutations

Abstract Background: Imetelstat, a first in class specific telomerase inhibitor, induced hematologic responses in all patients (pts) with essential thrombocythemia (ET) in a recent phase-2 study, and molecular responses were seen within 1-12 months in the majority of pts carrying JAK2 V617F (JAK2m) and CALR mutations (CALRm) (Baerlocher et al., ASH 2014). It has been reported that the treatment response to imetelstat in pts with myelofibrosis (Tefferi et al., ASH 2014) was negatively influenced by mutations in ASXL1 and favorably impacted by mutations in SF3B1 and U2AF1. In pts with CALRm ET treated with Interferon-alpha (INFa) the response rate was lower if the patient carried more than one mutation in ASXL1, TET2, IDH2, CSF3R and SH2B3 (Kiladjian et al., ASH 2014). In addition, in JAK2m pts with polycythemia vera, TET2-mutated clones have been demonstrated to be resistant to IFNa therapy (Kiladjian et al., Leukemia 2010). Aims: Our aim was to assess the dynamics of additional mutations besides JAK2 V617F, CALR and MPL mutations in pts with ET treated with imetelstat, and to investigate their association with hematologic and molecular response. Methods: The study enrolled 18 pts with ET who had failed or were intolerant to ≥1 prior therapy, or refused standard therapy. Pts were treated with imetelstat 7.5 mg/kg or 9.4 mg/kg IV weekly until attainment of platelet count ~250-300x109/L followed by a maintenance phase with dosing titrated according to platelet count. DNA was extracted from granulocytes or leukocytes. Mutation analysis was performed by high-throughput sequencing of selectively amplified target sequences on a PGM Ion Torrent instrument covering the coding and adjacent intronic sequences of 15 genes known for mutations in MPN (ASXL1, CBL, DNMT3A, EZH2, IDH1, IDH2, JAK2, MPL, SF3B1, SRSF2, SOCS1, TET2, TP53, U2AF1 and ZRSR2). Samples were taken at baseline and up to 8 time points during treatment through cycle 26, with approximately 3 cycles between samples. Results: As a driver mutation, at baseline, 9 pts had JAK2V617F, 5 pts had CALR and 2 pts had MPL mutations (MPLm; one L and one K). Two pts were triple negative. A partial molecular response (according to Barosi et al., Blood 2009) was seen in 7/8 JAK2m pts and reductions in CALRm allele burden were between 15% and 55%. At baseline, 19 additional somatic mutations (11 missense, 4 frameshift, 3 nonsense, 1 splice site) were detected in 6/9 JAK2m and 2/5 CALRm pts, affecting the genes ASXL1 (n=3), DNMT3A (n=5), EZH2(n=1), SF3B1 (n=1), SOCS1 (n=2), TET2 (n=4) and TP53 (n=3). Two mutations in DNMT3A and ZRSR2 were detected in 1/2 MPLm pts and none were found in the triple negative pts. Of note, all but one mutated pts carried at least 2 mutations in addition to their driver mutation (up to 5 additional mutations). ASXL1 and SOCS1 mutations were only present in JAK2m pts, and these pts reached hematologic and partial molecular response. At time of best molecular response, a reduction of mutant allele burden corresponding to the reduction of the driver mutations was observed for mutations in ASXL1, EZH2, SOCS1 and some DNMT3A, TET2 and TP53 mutations, but not for SF3B1 and ZRSR2 mutations. Sequential analysis in a JAK2m patient with 4 additional mutations showed that all 4 mutated clones were sensitive to imetelstat treatment and followed the dynamics of the JAK2 mutation, and in a patient with 5 mutations in addition to the CALR mutation, 3/5 mutated clones were responsive. Three pts with a weaker molecular response had TP53 mutations which persisted over time, and 2 were accompanied by additional mutations. Conclusions: 9/18 (50%) pts in this study carried no additional mutations at baseline, and 50% carried 1-5 mutations in addition to the driver mutation, suggesting genetic instability in a subset of pts. Genetic instability might be enhanced in this pretreated patient cohort with a median time since diagnosis of 7.2 years (range 0.3-24.9). Clones with ASXL1 mutations, a known poor prognostic marker in MPN, appear to be sensitive to imetelstat treatment, and pts with 2-5 additional mutations had both hematologic and molecular responses. TP53 mutations were an exception, being associated with weaker molecular responses to imetelstat treatment. Additional analyses of associations between mutations, disease characteristics and response will be presented. . Disclosures Oppliger Leibundgut: Novartis: Research Funding; Geron: Research Funding. Burington:Geron Corporation: Employment. Ottmann:Astra Zeneca: Honoraria, Membership on an entity's Board of Directors or advisory committees; Bristol Myers Squibb: Honoraria, Membership on an entity's Board of Directors or advisory committees; Ariad: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Pfizer: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Novartis: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding. Spitzer:Moldx Palmetto GBA: Consultancy; Incyte: Consultancy; Trovagene Inc: Consultancy. Odenike:Incyte: Honoraria, Membership on an entity's Board of Directors or advisory committees; Suneisis Pharmaceuticals: Honoraria, Membership on an entity's Board of Directors or advisory committees; Sanofi-Aventis: Honoraria, Membership on an entity's Board of Directors or advisory committees; Algeta Pharmaceuticals: Honoraria, Membership on an entity's Board of Directors or advisory committees; Spectrum Pharmaceuticals: Honoraria, Membership on an entity's Board of Directors or advisory committees; CTI/Baxter: Honoraria, Membership on an entity's Board of Directors or advisory committees; Geron: Research Funding. McDevitt:Salamandra Inc: Consultancy; Alexion: Membership on an entity's Board of Directors or advisory committees. Roeth:Alexion Pharmaceuticals: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Geron: Research Funding. Snyder:Ariad: Membership on an entity's Board of Directors or advisory committees; Incyte: Membership on an entity's Board of Directors or advisory committees; BMS: Membership on an entity's Board of Directors or advisory committees. Baerlocher:Geron: Research Funding; Janssen: Research Funding; Novartis: Research Funding.

scholarly journals PF-114 in Patients Failing Prior Tyrosine Kinase-Inhibitor Therapy Including BCR::ABL1T315I

Blood ◽  
2021 ◽  
Vol 138 (Supplement 1) ◽  
pp. 1482-1482
Author(s):  
Anna G. Turkina ◽  
Olga Vinogradova ◽  
Elza Lomaia ◽  
Evgeniya Shatokhina ◽  
Oleg A. Shukhov ◽  
...  
Keyword(s):  
Tyrosine Kinase ◽  
Tyrosine Kinase Inhibitor ◽  
Board Of Directors ◽  
Research Funding ◽  
Kinase Inhibitor ◽  
Phase 1 ◽  
Ankle Brachial Index ◽  
Cytogenetic Response ◽  
Molecular Response ◽  
Advisory Committees

Abstract Background: Not everyone with CML responds optimally to TKI-therapy, especially those with BCR::ABL1T315I. PF-114 is a 4 th-generation oral tyrosine kinase-inhibitor (TKI) active against wild-type and mutated BCR::ABL1 isoforms including BCR::ABL1T315I. We present final results of a phase-1 study (NCT02885766). Methods: 3+3 dose-escalation study to determine maximum tolerated dose (MTD) and dose-limiting toxicity (DLT). Secondary objectives included safety and efficacy based on haematological, cytogenetic and molecular response criteria. Adverse events (AEs) were graded using NCI-CTCAE v4.03. Results: 51 subjects (5 with accelerated phase CML, 46 - with chronic CML), 23 males, were studied. Daily doses were 50-600 mg/d given once daily continuously. Median age was 50 y (range, 29-82 y). Median CML duration pre-study was 10 y (range, 0.3-23 y). 16 subjects had BCR::ABL1T315I. 25 subjects received ≥ 3 prior TKIs. Median follow-up was ≥ 31 mo and median exposure, 6 mo (range, 0.4-52). Therapy was ongoing in 7 subjects at study termination. Others discontinued because of progression (n = 20), AEs (n = 2), consent withdrawal (n = 5), entry into another study (n = 3) or other reasons (n = 14). The MTD was 600 mg with the grade-3 psoriasis-like skin AE as the DLT. There were no vascular occlusive events or deviations of ankle-brachial index. Complete haematologic response (CHR) was achieved in 14 of 30 subjects, major cytogenetic response (MCyR) in 15 of 44 subjects, complete cytogenetic response (CCyR) in 11 of 50 subjects and major molecular response (MMR) in 8 of 51 subjects. Median duration of CHR was 12 mo and has not been reached for MCyR, CCyR and MMR. The best safety/efficacy dose was 300 mg/d with 6 of 9 subjects achieving a MCyR, 5, a CCyR and 4, MMR. 5 of 16 subjects with BCR::ABL1T315I responded, including 4 achieving a MCyR, 2, a CCyR and 1, a MMR. 2 of 6 subjects failing ponatinib achieved a CHR. Conclusion: PF-114 was safe and effective in subjects failing ≥ 2 TKIs and those with BCR::ABL1T315I including those failing ponatinib. The PF-114 dose for further study is 300 mg/d. Disclosures Turkina: Bristol Myers Squibb: Speakers Bureau; Pfizer: Speakers Bureau; Pharmstandart: Speakers Bureau; Novartis Pharma: Speakers Bureau. Vinogradova: Bristol Myers Squibb: Speakers Bureau; Novartis Pharma: Speakers Bureau; Pfizer: Speakers Bureau; Pharmstandart: Speakers Bureau. Lomaia: Novartis: Honoraria; Pfizer: Honoraria; BMS: Honoraria; Pharmstandard: Honoraria. Chelysheva: Pfizer: Speakers Bureau; Novartis Pharma: Speakers Bureau; Bristol Myers Squibb: Speakers Bureau; Pharmstandart: Speakers Bureau. Petrova: Pfizer: Speakers Bureau; Novartis Pharma: Speakers Bureau. Cortes: Bio-Path Holdings, Inc.: Consultancy, Membership on an entity's Board of Directors or advisory committees; Sun Pharma: Consultancy, Research Funding; Takeda: Consultancy, Research Funding; Pfizer: Consultancy, Research Funding; Bristol Myers Squibb, Daiichi Sankyo, Jazz Pharmaceuticals, Astellas, Novartis, Pfizer, Takeda, BioPath Holdings, Incyte: Consultancy, Research Funding; Novartis: Consultancy, Research Funding. Baccarani: Novartis: Consultancy, Membership on an entity's Board of Directors or advisory committees. Ottmann: Fusion: Honoraria; Incyte: Honoraria, Research Funding; Amgen: Honoraria, Research Funding; Celgene/BMS: Honoraria, Research Funding; Novartis: Honoraria. Mikhailov: Fusion Pharma: Current Employment. Novikov: Fusion Pharma: Current Employment. Shulgina: Fusion Pharma: Current Employment. Chilov: Fusion Pharma: Current Employment.

scholarly journals High Plasma Levels of TGF-α and IL-6 at Diagnosis Predict Early Molecular Response Failure and Transformation in CML

Blood ◽  
2014 ◽  
Vol 124 (21) ◽  
pp. 1788-1788
Author(s):  
Eva Nievergall ◽  
John Reynolds ◽  
Chung H Kok ◽  
Dale Watkins ◽  
Mark Biondo ◽  
...  
Keyword(s):  
Board Of Directors ◽  
Research Funding ◽  
Recursive Partitioning ◽  
P Value ◽  
Molecular Response ◽  
Plasma Samples ◽  
Advisory Committees ◽  
Tki Treatment ◽  
Cytokine Profiling ◽  
Complete Molecular Response

Abstract Introduction: Early molecular response (EMR, BCR-ABL (IS) ≤ 10% at 3 months) is a strong predictor of outcome in imatinib-treated chronic phase chronic myeloid leukemia (CP-CML) patients, but for patients who transform early 3 months may be too late for effective therapeutic intervention. Thus, alternative approaches are required to identify poor responders at the time of diagnosis. The aim of this study was to identify plasma biomarkers at diagnosis that will predict for subsequent EMR failure, early transformation or the development of BCR-ABL1 kinase domain mutations. Cytokine profiling has proven valuable in identifying prognostic factors in myelofibrosis and myelodysplastic syndromes; however, similar comprehensive studies are lacking to date in CML. Methods: Plasma samples from CP-CML patients enrolled to the TIDEL II trial were collected prior to starting imatinib treatment (n=186) and after 6 months on TKI (n=17); and compared to those of healthy donors (n=19). The levels of 39 cytokines, chemokines and growth factors (CC&GF) were measured using a Luminex multiplex assay. To identify potential biomarkers to predict EMR failure, random forest analysis and recursive partitioning techniques in R were applied as statistical methods. Results: Plasma concentrations of 13/39 CC&GF were significantly elevated at CP-CML diagnosis compared to healthy donor samples. Most (EGF, bFGF, VEGF, TGF-α, CXCL1, CCL4, sCD40L and IL-4) werenormalized after 6 months of TKI treatment while others (TNF-α, sIL-2Ra, IL-8, IL-10, IL-1a) remained at higher levels, possibly reflecting persistent disease-induced alterations within the microenvironment. A third subset of CC&GF, such as CCL2, CCL3 and CCL22, showed higher circulation levels only in TKI-treated patients but not at diagnosis, suggesting that changes in these CC&GF could be treatment-related. 183/186 patients had BCR-ABL1 assessments available at 3 months, and 23/183 (13%) did not achieve EMR. Random forest analysis identified TGF-α, IL-6 and IFN-α as the most important CC&GF associated with EMR failure. Recursive partitioning incorporating these three variables produced a classification tree based only on TGF-α and IL-6, and demonstrated that 12/20 (60%) of patients who were TGF-αhi/IL-6hi failed to achieve EMR (Table 1). Importantly, this group contained 3/3 (100%) patients who transformed within the first 12 months of TKI treatment. Both TGF-α (7.99 vs. 60.57 pg/ml, p<0.001) and IL-6 (0.26 vs. 8.35 pg/ml, p=0.004) were increased in plasma samples of EMR failure patients compared to those who achieved EMR, and this was independent of white cell count (both for TGF-α and IL-6) and Sokal Score (TGF-α only). While less compelling, high TGF-α alone was associated with EMR failure in 15/39 (38%) patients compared to 8/144 (6%) in the TGF-αlo group (p<0.001) and reduced transformation-free survival (92% vs. 99%, p=0.029). Interestingly, the TGF-αlo group also had higher rates of complete molecular response (38% vs. 8%, p=0.005). While the relevance of IL-6 in CML pathogenesis has been previously proposed the association of the EGFR ligand TGF-α with CML treatment outcomes is novel. Conclusion: These data highlight for the first time the prognostic value of cytokine profiling in CML patients. The combination of TGF-α and IL-6 plasma levels at CML diagnosis is strongly predictive for EMR, transformation and CMR. While TGF-α alone delineates a poor response group of patients, the addition of IL-6 provides significant additional power and strongly selects for high-risk patients who may benefit significantly from very early proactive intervention. Thus, incorporation of these simple measurements to the diagnostic work-up of CP-CML patients may enable therapy intensity to be individualized according to the risk profile of the patient. Abstract 1788. Table 1: Treatment outcomes in patients grouped according to predictive plasma biomarkers N(of 183 total patients) EMR failure Trans-formation Mutation MMR by 24 months CMR by 24 months + TGF-αhi/IL-6hi 20 12 (60%) 3# 5 9 (45%) 1 (5%) TGF-αhi/IL-6lo 19 3 (16%) 0 0 12 (63%) 2 (11%) TGF-αlo 144 8 (6%) 2## 6 117 (81%) 55 (38%) Overall p value (log-rank) < 0.001* <0.001 <0.001 0.004 0.004 MMR – major molecular response CMR – complete molecular response (undetectable BCR-ABL1) * p value is only indicative as the groups were formed based on EMR # all early transformations (< 1 year of TKI treatment) ## all late transformations Disclosures Reynolds: Novartis: Shareholder Other. Biondo:CSL Limited: Employment. Busfield:CSL Limited: Employment. Vairo:CSL Limited: Employment. Yeung:Novartis: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; BMS: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding. White:Novartis: Honoraria, Research Funding; BMS: Honoraria, Research Funding; Ariad: Research Funding. Hughes:Novartis: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; BMS: Honoraria, Membership on an entity's Board of Directors or advisory committees, Research Funding; Ariad: Honoraria, Membership on an entity's Board of Directors or advisory committees; Pfizer: Membership on an entity's Board of Directors or advisory committees.

scholarly journals Outcomes with Interferon in Polycythemia Vera: A Systematic Review and Meta-Analysis

Blood ◽  
2021 ◽  
Vol 138 (Supplement 1) ◽  
pp. 3659-3659
Author(s):  
Moazzam Shahzad ◽  
Mamoon Ahmed ◽  
Muhammad Arslan ◽  
Sakina Abbas ◽  
Tooba Kashif ◽  
...  
Keyword(s):  
Systematic Review ◽  
Side Effects ◽  
Polycythemia Vera ◽  
Board Of Directors ◽  
Research Funding ◽  
Meta Analysis ◽  
Molecular Response ◽  
Publicly Traded ◽  
Advisory Committees ◽  
Hematological Response

Abstract Introduction Polycythemia Vera (PV) is a chronic myeloproliferative neoplasm that presents with increase proliferation of red cells as well as variable presence of thrombocytosis & leukocytosis. Currently treatment options for PV are phlebotomy, low-dose aspirin or cytoreductive therapy. Interferon (IFN) is a biological response modifier that exerts myelosuppressive action on excessively proliferative cell lineages and is also a non-leukemogenic drug. We conducted a systematic review and meta-analysis on the efficacy of Interferon for the treatment of PV. Methods Following the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines, a comprehensive literature search was conducted on PubMed, Cochrane, and Clinical trials.gov using MeSH terms and keywords for " Polycythemia Vera " AND " Interferons ". A total of 577 records were discovered using database searching. All search results were imported into the Endnote X9.0 reference manager, and duplicates were removed. After screening and excluding review and irrelevant articles, 22 original articles reporting IFN as treatment for PV in adult patients were included. The data were collected for baseline characteristics of the participants and efficacy and safety of the intervention. Quality evaluation was done using the NIH quality assessment tool. The inter-study variance was calculated using the Der Simonian-Laird Estimator. Proportions along with 95% Confidence Interval (CI) were extracted to compute pooled analysis using the 'meta' package by Schwarzer et al. in the R programming language (version 4.16-2). Results A total of 1123 patients were evaluated from 22 studies. The median age was 54.5 (47.5-67) years and median follow-up time was 24 (9-146) months. The median prior number of phlebotomies was 4.55 (2-18). The type of IFN used were recombinant IFN-alpha-2a in 2 studies, IFN-a2b in 5 studies, recombinant IFN-a in 6 studies, and Pegylated-recombinant IFN-α2a in 7 studies. The pooled overall hematological response (OHR) was 86% (95% Cl 0.76-0.93, I 2= 84%, p=&lt;0.01, n=460) with pooled complete hematological response (CHR) of 63% (95% Cl 0.50-0.76, I 2=85%, p=&lt;0.01, n=409) and pooled partial hematological response (PHR) of 22% (95% Cl 0.12-0.34, I 2=81%, p=&lt;0.01, n=361). Pooled overall molecular response (OMR) was 64% (95% Cl 0.56-0.71, I 2=0%, p=0.6, n=190) with pooled complete molecular response (CMR) of 24% (95% Cl 0.14-0.35, I 2=75%, p=&lt;0.01, n=276) and pooled partial molecular response (PMR) of 38% (95% Cl 0.31-0.45, I 2=0%, p=0.5, n=191). Side effects reported were nausea, allergic reactions, liver dysfunction, dose dependent mild myalgia, fever, malaise, itching, persistent fever, headache, and flu like symptoms [Table 1]. Conclusion Interferon shows promising results when used for the treatment of polycythemia vera with a durable hematologic and molecular response and has an acceptable side effects profile. However, large randomized clinical trials are needed to confirm these findings and to explore the dose and combination of interferon with other drugs.. Figure 1 Figure 1. Disclosures Abhyankar: Incyte/Therakos: Consultancy, Research Funding, Speakers Bureau. McGuirk: Bellicum Pharmaceuticals: Research Funding; Juno Therapeutics: Consultancy, Honoraria, Research Funding; Pluristem Therapeutics: Research Funding; Novartis: Research Funding; Allovir: Consultancy, Honoraria, Research Funding; EcoR1 Capital: Consultancy; Novartis: Research Funding; Magenta Therapeutics: Consultancy, Honoraria, Research Funding; Fresenius Biotech: Research Funding; Kite/ Gilead: Consultancy, Honoraria, Other: travel accommodations, expense, Kite a Gilead company, Research Funding, Speakers Bureau; Astelllas Pharma: Research Funding; Gamida Cell: Research Funding. Yacoub: Dynavex: Current equity holder in publicly-traded company; Cara: Current equity holder in publicly-traded company; Ardelyx: Current equity holder in publicly-traded company; Agios: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; ACCELERON PHARMA: Membership on an entity's Board of Directors or advisory committees; CTI Biopharma: Membership on an entity's Board of Directors or advisory committees; Novartis: Consultancy, Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Incyte: Consultancy, Honoraria, Speakers Bureau; Seattle Genetics: Honoraria, Speakers Bureau; Hylapharm: Current equity holder in publicly-traded company.

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