scholarly journals Clofarabine Plus Low-Dose Cytarabine for the Treatment of Patients with Higher-Risk Myelodysplastic Syndromes (MDS) Who Have Relapsed or Are Refractory to Hypomethylating Agent (HMA) Therapy

Blood ◽  
2014 ◽  
Vol 124 (21) ◽  
pp. 534-534
Author(s):  
Elias Jabbour ◽  
Koji Sasaki ◽  
Naval Daver ◽  
Naveen Pemmaraju ◽  
Nitin Jain ◽  
...  
Keyword(s):  
High Risk ◽  
Research Funding ◽  
Low Dose ◽  
Liver Enzymes ◽  
Performance Status ◽  
Intermediate Risk ◽  
Elevated Liver Enzymes ◽  
Elevated Bilirubin ◽  
Low Dose Cytarabine

Abstract Background: Treatment with HMAs such as azacitidine and decitabine has changed the overall outcome of patients with MDS. Failure to respond to or relapse from HMA treatment is associated with poor prognosis without further approved therapy. Clofarabine is a second-generation nucleoside analog with single-agent activity in MDS. Aim: This is a phase II trial to evaluate the safety and activity of the combination of clofarabine and low-dose cytarabine in the treatment of patients with high-risk MDS who failed prior HMA therapy. Materials and Methods: Eligible patients were adults older than 18 years with MDS who had no response, progressed, or relapsed following at least 4 cycles of therapy with either azacitidine and/or decitabine and an ECOG performance status of ≤ 2 at the time of study entry. Responses were defined according to IWG 2006 criteria. Induction therapy consisted of clofarabine 15 mg/m2 IV daily for 5 days (days 1-5) and cytarabine 20 mg SC twice daily for 7 days (days 1-7). Responding patients proceeded with consolidation therapy with clofarabine 15 mg/m2 IV daily for 3 days (days 1-3) and cytarabine 20 mg SC twice daily for 5 days (days 1-5) every 4 weeks for a maximum of 12 cycles. Overall survival (OS) was defined as the time between the date of the first dose of clofarabine and the date of death from any cause. Univariate (UVA) and multivariate analysis (MVA) related to response and survival were performed with Cox regression analysis. Results: Between January 2012 and December 2013, 56 patients were enrolled. Fifty-two patients were evaluable for response (4 patients had not been on-study long enough to evaluate). The median follow-up is 15.3 months (range, 1.2-27.7+), and the median age at enrollment was 71 years (31-83). Ten patients (19%) had prior chemotherapy and 12 (23%) had prior radiation therapy. Median bone marrow blast percentage was 15% (6-30%). Three patients (6%) had CMML-1, 4 (8%) had CMML-2, 7 (14%) had RAEB-1, 19 (37%) had RAEB-2, and 19 (37%) had RAEB-T. Eight (15%) patients had intermediate-1 risk, 23 (44%) had intermediate-2 risk, and 21 (40%) had poor risk by IPSS. By IPSS cytogenetic risk, 25 patients (48%) had low-risk cytogenetics, 15 (29%) had intermediate-risk, and 12 (23%) had high-risk. Mutational analysis detected 2 (4%) FLT3-ITD, 0 FLT3-D835, 7 (13%) RAS, 2 (4%) NPM1, and 2 (4%) JAK2 mutations. Thirty-nine patients (75%) received prior azacitidine therapy and 15 (29%) received prior decitabine therapy. The overall response rate (ORR) was 48% (9 [17%] achieved complete remission [CR], 3 [6%] complete remission with incomplete platelet recovery [CRp], 7 [13%] marrow CR, and 6 [12%] had stable disease with hematological improvement), and median duration of response was 12.0 months (range, 2.0-26.7+). Five patients (10%) went on to receive allogeneic stem cell transplantation. Of the 25 patients with low-risk cytogenetics, 16 (64%) achieved OIR, 5 (20%) CR, 3 (12%) CRp, 6 (24%) mCR, and 2 (8%) HI. Of the 15 patients with intermediate-risk cytogenetics, 5 (33%) had OIR, 4 (27%) CR, and 1 (4%) mCR. Of 12 patients with high-risk cytogenetics, 2 (17%) had OIR, 1 (8%), CR, and 1 (8%) HI. Median OS was 6.8 months (range, 0.4-27.7+). The median OS in patients with response and those without response was >12.4 months (range, 3.5-27.7+) and 3.4 months (range, 0.4-16.1), respectively. Most toxicities were of grade ≤ 2 and included elevated liver enzymes in 41% of patients, elevated bilirubin in 38%, rash in 28%, nausea in 31%, headache in 24%, and febrile neutropenia in 28%. Grade ≥ 3 toxicities included elevated liver enzymes (3%) and elevated bilirubin (3%). 21 (40%) patients had clofarabine dose reduction after a median of 2 courses (range, 1-8). UVA and MVA for survival identified performance status ≥2 (p=0.002; HR, 4.860; 95%CI, 1.784-13.244), stable disease or progressive disease after clofarabine (p<0.001; HR, 8.372; 95%CI, 3.233-21.677), thrombocytopenia <30 (/109L) (p=0.001; HR, 3.659; 95%CI 1.682-7.958), and complex cytogenetics (UVA, p<0.001; MVA, p= 0.110, HR, 2.329; 95%CI 0.826-6.564) as prognostic factors for poorer OS. Conclusion: The combination of clofarabine and low-dose cytarabine has an ORR of 48% in patients with MDS who failed prior therapy with HMA. The study continues to accrue, and updated results with longer follow up will be presented at the meeting. Disclosures Daver: Novartis: Research Funding. Kadia:GSK: Research Funding; ARIAD: Honoraria. Borthakur:Tetralogic Pharmaceuticals: Research Funding. O'Brien:Amgen, Celgene, GSK: Consultancy; CLL Global Research Foundation: Membership on an entity's Board of Directors or advisory committees; Emergent, Genentech, Gilead, Infinity, Pharmacyclics, Spectrum: Consultancy, Research Funding; MorphoSys, Acerta, TG Therapeutics: Research Funding. Kantarjian:ARIAD: Research Funding; Pfizer: Research Funding; Amgen: Research Funding. Garcia-Manero:Epizyme, Inc: Research Funding.

Clofarabine Plus Low-Dose Cytarabine For The Treatment Of Patients Withhigher-Risk Myelodysplastic Syndrome (MDS) Who Have Been Relapsing After, Or Are Refractory To, Hypomethylator Agent Therapy

Blood ◽  
2013 ◽  
Vol 122 (21) ◽  
pp. 1525-1525 ◽  
Author(s):  
Aziz Nazha ◽  
Guillermo Garcia-Manero ◽  
Hagop M. Kantarjian ◽  
Farhad Ravandi ◽  
Gautam Borthakur ◽  
...  
Keyword(s):  
Complete Remission ◽  
Stable Disease ◽  
Low Dose ◽  
Liver Enzymes ◽  
Performance Status ◽  
Single Agent ◽  
Elevated Liver Enzymes ◽  
Elevated Bilirubin ◽  
Low Dose Cytarabine

Abstract Background Treatment with hypomethylating agents (HMA) such as azacitidine and decitabine has changed the overall outcome of patients with MDS. Failure to responed to or relapse from treatment with HMA carries a poor outcome and no approved therapy for these patients exists. Clofarabine is a second generation nucleoside analog with single agent activity in MDS. Aim This is a phase II trial to evaluate the safety and activity of the combination of clofarabine and low dose cytarabine in the treatment of patients with high risk MDS who failed prior HMA therapy. Material and Method Eligible were adults older than 18 years with MDS who have had no response, progressed, or relapsed following at least 4 cycles of therapy with either azacitidine and/or decitabine. Patients were required to have an ECOG performance status of </=2 at the time of study entry. Responses were defined according to IWG 2006 criteria. Induction therapy consisted of clofarabine 15 mg/m2 IV daily X 5 days (days 1-5) and cytarabine 20 mg SC twice daily X 7 days (days 1-7). Patients could receive up to 3 induction cycles as long as they tolerated the therapy and had stable disease. Responding patients proceeded with consolidation therapy with clofarabine 15 mg/m2IV daily X 3 days (days 1-3) and cytarabine 20 mg SC twice daily X 5 days (days 1-5) for a maximum of 12 cycles. Cycles were repeated every 4 to 8 weeks depending on hematopoietic recovery and resolution of toxicities. Results Between January 2012 and March 2013, 29 patients were enrolled. The clinical characteristics are summarized in Table 1. Twenty four patients were evaluable for response (5 patients were too early for response). The overall response rate (ORR) was 50% (8 [33%] achieved complete remission (CR)/ complete remission with incomplete platelets recovery (CRp)/marrow CR, and 4 [17%] had stable disease with hematological improvement). With a median follow up of 4.9 months (range, 1.9-16.7), the median overall survival (OS) was 4.8 months (range, 0.5-13.5). Most toxicities were grade </= 2 and included: elevated liver enzymes in 41% of the patients, elevated bilirubin (38%), rash (28%), nausea (31%), headache (24%), and febrile neutropenia (28%). Grade >/= 3 toxicities included: elevated liver enzymes (3%) and elevated bilirubin (3%). Four-week mortality was 12%. Conclusion The combination of clofarabine and low-dose cytarabine has an ORR of 50% in patients with MDS who failed prior therapy with HMA. The study continues to accrue and updated results with longer follow up will be presented at the meeting. Disclosures: Off Label Use: Clofarabine use in MDS. Faderl:Sanofi-Aventis: Consultancy, Membership on an entity’s Board of Directors or advisory committees, Research Funding.

scholarly journals Single Centre Experience in Treating Elderly Patients with Acute Myeloid Leukaemia or High Risk Myelodysplastic Syndrome with a Combination of Low Dose Cytarabine, Venetoclax and Fluconazole (VeLDAC-F)

Blood ◽  
2018 ◽  
Vol 132 (Supplement 1) ◽  
pp. 5220-5220 ◽  
Author(s):  
Lauren Child ◽  
Henry Chan ◽  
Ross Alistair Henderson ◽  
Anna Elinder ◽  
Eileen Merriman ◽  
...  
Keyword(s):  
High Risk ◽  
Research Funding ◽  
Low Dose ◽  
Complete Response ◽  
Event Free Survival ◽  
Free Survival ◽  
Haematological Response ◽  
Tumour Lysis ◽  
Low Dose Cytarabine

Abstract Introduction Acute myeloid leukaemia (AML), high risk myelodysplastic syndrome (MDS) and chronic myelomonocytic leukaemia (CMML) are bone marrow disorders that predominately affect the elderly population. The treatment options for this patient group have been limited and those unable to undergo intensive chemotherapy have historically had a poor prognosis. Low dose cytarabine (LDAC) is an accepted treatment option in patients who are ineligible for intensive therapy. LDAC has been shown to achieve a complete response (CR) and complete response with incomplete count recovery (CRi) in 11-18% of patients with a median overall survival of 5- 12 months. Recent evidence suggests that venetoclax (VEN) has a synergistic effect with LDAC with a phase I/II trial reporting a CR +CRi of 33/61 (54%) with this combination. Antifungal agents are commonly used in AML treatment protocols due to the increased risk of invasive fungal infections in this population. Fluconazole, a moderate CYP3A4 inhibitor, increases the maximum concentration (Cmax) of VEN resulting in a 2-5-fold increase in the area under the curve (AUC), thereby significantly increasing drug exposure. When using an azole antifungal, a dose reduction of VEN is recommended to maintain safe therapeutic levels. Here, we present our experience with using a lower dose of VEN in combination with fluconazole and LDAC (VeLDAC-F) in patients with AML, high risk MDS and CMML. Methods Patients with a diagnosis of AML, high risk MDS or CMML that required treatment but were not candidates for high intensity chemotherapy were offered the combination of VeLDAC-F. In cycle 1, VEN was started at 100mg daily and ramped up over the first 4 days to 200mg. This dose was continued from days 4-10. Fluconazole was started on day 3 and continued at 200mg until day 10. On subsequent cycles, VEN was administered at 200mg daily on days 1-10 with 200mg of fluconazole. Subcutaneous LDAC 20 mg/m2/day was given on days 1-10 of each cycle. Treatment cycles were repeated every 4-6 weeks. Patients were not routinely admitted for initiation of chemotherapy, unless the circulating blast count was high. Patients who received at least one dose of VeLDAC-F were included. Event-free survival was the time to either treatment termination, disease progression or death; overall survival was the time to death from all cause. Patients who achieved a haemoglobin > 100g/L, platelets >100 x 109/L and neutrophils > 1 x 109/L were said to have reached a modified haematological response (HR), and time to modified haematological response was analysed using competing risk model with death as the competing factor. All statistical analysis was done using IBM SPSS version 20 and R Statistics. Results Nineteen patients received at least one dose of VeLDAC-F between the 1st of June 2017 and the 1st of June 2018. The majority of patients were male (89.5%). 14/19 (73.7%) had an ECOG performance status of 0 or 1 and the median Charleston co-morbidity index was 6. The median age at diagnosis was 77 years (range 64.4- 87.7 years). The cohort included 9 patients with AML (47.4%), 7 with high risk MDS (36.8%) and 2 with CMML (15.8%). Twelve patients were still alive at the time of analysis (63.2%). The median follow-up was 182 days. Ten patients achieved a modified HR (52.6%). The median duration of response in these patients was 210 days and the 100 day probability of achieving a modified HR was 50.1%. The majority of patients who achieved a modified HR did so within 2 cycles of treatment with only one patient achieving a modified HR after 100 days. Seven patients died over the follow-up period (36.8%) with one patient dying within 30 days of commencing treatment (5.3%). Four patients died of progressive disease, 2 from sepsis and 1 from catastrophic bleeding. The median OS had not been reached at the time of analysis. The 180-day OS was 61%. The median event free survival was 217 days. There were no cases of clinical tumour lysis and three cases of biochemical tumour lysis (15.8%). Only 10 patients were admitted to hospital with neutropenic fever over the course of the follow up period (52.6%). Discussion The combination of VeLDAC-F appears to be an effective regimen for elderly patients with AML, high grade MDS and CMML who are otherwise ineligible for intense chemotherapy. The risk of tumour-lysis is low in this real-world cohort, but ongoing follow-up and further clinical trials are needed to establish the longer-term outcomes of this regime. Figure. Figure. Disclosures Chan: Amgen: Honoraria; Karyopharm: Research Funding. Simpson:Pharmacyclics LLC, an AbbVie Company: Research Funding; Acerta: Research Funding; Merck: Honoraria, Research Funding; MSD: Honoraria; BeiGene: Research Funding; Sanofi: Research Funding; Bristol-Myers Squibb: Other: TRAVEL, ACCOMMODATIONS, EXPENSES; Celgene: Honoraria, Other: TRAVEL, ACCOMMODATIONS, EXPENSES; Novartis: Other: TRAVEL, ACCOMMODATIONS, EXPENSES; Roche: Honoraria, Research Funding; Abbvie: Honoraria, Research Funding; Amgen: Research Funding, TRAVEL, ACCOMMODATIONS, EXPENSES; Janssen: Honoraria, Research Funding.

scholarly journals Clofarabine Plus Low-Dose Cytarabine for the Treatment of Patients with Higher-Risk Myelodysplastic Syndrome (MDS) Who Have Been Relapsing after, or Are Refractory to, Hypomethylating Agent (HMA) Therapy

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 3166-3166 ◽  
Author(s):  
Elias J. Jabbour ◽  
Hagop M. Kantarjian ◽  
Koji Sasaki ◽  
Tapan M. Kadia ◽  
Farhad Ravandi ◽  
...  
Keyword(s):  
Research Funding ◽  
Low Dose ◽  
Group Performance ◽  
Performance Status ◽  
Advisory Board ◽  
Cell Transplant ◽  
Complex Karyotype ◽  
Overall Response ◽  
Low Dose Cytarabine

Abstract Background: HMA therapy is standard of care for patients with MDS. Outcome post HMA failure is poor with a median survival of 4-6 months. Clofarabine is a second generation nucleoside analog with single agent activity in MDS. The objective of this phase II trial is to evaluate the safety and activity of the combination of clofarabine and low dose cytarabine in the treatment of patients with high risk MDS who failed prior HMA therapy. Methods: Eligible patients were adults older than 18 years with MDS intermediate-1 and higher by the IPSS, who have had no response, progressed, or relapsed following at least 4 cycles of therapy with either azacitidine and/or decitabine. Patients were required to have an Eastern Cooperative Oncology Group performance status of </=2 at the time of study entry. Responses were defined according to International Working Group 2006 criteria. Induction therapy consisted of clofarabine 10-15 mg/m2 IV daily X 5 days (days 1-5) and cytarabine 20 mg SC twice daily X 7 days (days 1-7). Patients could receive up to 3 induction cycles as long as they tolerated the therapy and had stable disease. Responding patients proceeded with consolidation therapy with clofarabine 10-15 mg/m2IV daily X 3 days (days 1-3) and cytarabine 20 mg SC twice daily X 5 days (days 1-5) for a maximum of 12 cycles. Cycles were repeated every 4 to 8 weeks depending on hematopoietic recovery and resolution of toxicities. Results: From January 2012 to August 2015, 80 eligible patients were enrolled in this prospective study (NCT01444742) and received a median of 2 cycles (range, 1-12) (Table 1). The overall response rate (ORR) was 46% (16 [20%] achieved complete remission (CR), 17 [21%] marrow CR, 1 [1%] partial response (PR), 3 [4%] hematological improvement (HI)) with a median response duration of 7 months. The median time to response was 42 days (range, 9-191). By multivariate analysis, complex karyotype was the only independent factor predicting for response (hazard ratio [HR] 0.13; 95% confidence interval [CI]: 0.03- 0.62; p=0.01). Of the 37 patients with diploid karyotype, the overall response was 68% (7 [19%] achieved CR, 15 [41%] marrow CR, 1 [3%] PR, 3 [4%] HI). Nine of the responding patients received subsequent allogeneic stem cell transplant (ASCT). With a median follow-up of 24 months (range: 1-51 months), the median event-free survival (EFS) and overall survival (OS) times were 5 months (95% CI: 2.7-6.3) and 11 months (95% CI: 6.5-14.9), respectively (Figure 1). The median OS for responding and non-responding patients was 24 months (95% CI: 11.7-35.6) and 5 months (95% CI: 2.8-6.2), respectively (p<0.001). There was no difference in OS whether patients were censored or not at the time of ASCT (p=0.463). At last follow-up, 22 patients (28%) remained alive: 1 is receiving low-dose clofarabine and cytarabine, 5 are alive in response after ASCT, 9 are receiving salvage therapy, 1 went to hospice, and 6 were lost to follow-up. By multivariate analyses, complex karyotype, platelet count less than 30 x 109/L, and poor performance status were independently associated with poor survival. In addition, the response to the combination of low-dose clofarabine and cytarabine was independently associated with better OS (HR 0.17; 95% CI 0.09-0.36; p<0.001). Grade ≥ 3 therapy-related toxicity included infections (34%), increased liver functional tests (8%), acute renal failure (3%), skin rash (3%), syncope (1%), and rectal bleeding (1%). Twenty-two (28%) patients had clofarabine dose reduction after a median of 2 courses. After 47 patients were enrolled and several patients experienced infections during induction, the protocol was amended to reduce the dose of clofarabine to 10 mg/m2 per day for 5 and 3 days during the induction and consolidation phases, respectively. There was no difference in responses before and after the modification to the protocol's dosing schedule (p=0.314). Conclusion: The combination of low-dose clofarabine and cytarabine in patients with higher-risk MDS after HMA failure resulted in an ORR of 46% and median OS of 11 months and may be particularly effective in patients with diploid karyotype. Our results also indicate that the combination of low-dose clofarabine and cytarabine may be useful as a bridge to ASCT in eligible patients. Disclosures Jabbour: ARIAD: Consultancy, Research Funding; Pfizer: Consultancy, Research Funding; Novartis: Research Funding; BMS: Consultancy. Cortes:ARIAD: Consultancy, Research Funding; BMS: Consultancy, Research Funding; Novartis: Consultancy, Research Funding; Pfizer: Consultancy, Research Funding; Teva: Research Funding. Jain:Abbvie: Research Funding; Infinity: Research Funding; Servier: Consultancy, Honoraria; Incyte: Research Funding; Genentech: Research Funding; Pharmacyclics: Consultancy, Honoraria, Research Funding; ADC Therapeutics: Consultancy, Honoraria, Research Funding; Novartis: Consultancy, Honoraria; Pfizer: Consultancy, Honoraria, Research Funding; Celgene: Research Funding; Seattle Genetics: Research Funding; Novimmune: Consultancy, Honoraria; BMS: Research Funding. DiNardo:Agios: Other: advisory board, Research Funding; Daiichi Sankyo: Other: advisory board, Research Funding; Novartis: Other: advisory board, Research Funding; Abbvie: Research Funding; Celgene: Research Funding. Konopleva:Cellectis: Research Funding; Calithera: Research Funding.

Clofarabine Plus Low-Dose Cytarabine Induction Followed by Consolidation with Clofarabine Plus Low-Dose Cytarabine Alternating with Decitabine as Frontline Therapy for Patients (pts) with Acute Myeloid Leukemia (AML) ≥ 60 Years (yrs).

Blood ◽  
2009 ◽  
Vol 114 (22) ◽  
pp. 2058-2058
Author(s):  
Sameer A Parikh ◽  
Hagop Kantarjian ◽  
Guillermo Garcia-Manero ◽  
Elias Jabbour ◽  
Tapan Kadia ◽  
...  
Keyword(s):  
Induction Therapy ◽  
Research Funding ◽  
Low Dose ◽  
Single Agent ◽  
Disease Free Survival ◽  
Response Rates ◽  
High Response ◽  
Multiple Drugs ◽  
Low Dose Cytarabine

Abstract Abstract 2058 Poster Board II-35 Therapy of AML for elderly pts (≥ 60 yrs) remains challenging with low response rates, short durability of responses, and high toxicity rates following conventional therapy with standard-dose ara-C/anthracycline combinations. Clofarabine is a novel deoxyadenosine nucleoside analogue with single agent activity in frontline AML for older pts with ≥ 1 unfavorable prognostic factors. We have recently reported results of a randomized study suggesting higher response rates and comparable safety profile with the combination of clofarabine plus low-dose cytarabine over clofarabine alone. We have designed the current study of clofarabine plus low-dose cytarabine induction followed by consolidation with clofarabine plus low-dose cytarabine alternating with decitabine to maintain high response rates and improve disease-free survival based on the following hypotheses: 1) to extend duration of therapy by administering lower doses of the agents; and 2) to provide multiple drugs with different mechanisms of action to decrease risk of resistance. Pts were eligible if ≥ 60 yrs of age with newly diagnosed AML. Pts were excluded for ECOG PS > 2, creatinine > 1.5 mg/dL, cardiac ejection fraction < 40%, and prior therapy with clofarabine or decitabine. Induction therapy consisted of clofarabine 20mg/m2 i.v daily × 5 days plus cytarabine 20mg s.c. twice daily × 10 days in a laminar air flow room. Responding pts could receive up to 17 courses of consolidation therapy of clofarabine plus cytarabine (over 3 and 7 days, respectively) during consolidation courses 1-2, 6-8, 12-14) alternating with decitabine 20mg/m2 i.v. daily for 5 days during courses 3-5, 9-11, and 15-17. All pts received antibiotic prophylaxis with levofloxacin, valacyclovir and itraconazole (or equivalent). Forty pts have been enrolled with a median age of 70 yrs (range 60-80) of whom 22 (55%) had secondary AML (antecedent hematologic disorder in 11 pts). Two pts had received previous azacitidine for MDS. Fourteen pts (35%) had abnormal cytogenetics of whom 10 (25%) had monosomy 5, 7, or both. Four patients (10%) had a FLT3/ITD mutation. Of the 34 pts evaluable for response, 20 (59%) achieved CR and 2 (6%) CRp for an OR rate of 65%. Only 2 pts required 2 courses to CR. The OR rate for patients with diploid versus abnormal cytogenetics was 80% vs 50%; for pts with prior MDS versus no prior MDS 76% and 50%; and 75% for patients with FLT3 mutation. The median time to CR/CRp was 38 days (range 27-103). With a median follow up of 3.5 months (range 0.7-8.1), 2 pts relapsed (CR duration of 3.3 and 4.2 months, respectively); responses are ongoing in the remainder. Three pts (9%) died during induction therapy (one during re-induction) before a response could be established. The median number of consolidation cycles received by pts in CR was 3 (range 1-5). Most toxicities were ≤ grade 2 and included nausea/vomiting, diarrhea, rash, headache and mucositis. Six pts developed grade 3 elevations in serum transaminases which resolved at the end of induction therapy. Myelosuppression and neutropenic fever were common, but prolonged myelosuppression was rare. In conclusion, clofarabine plus low-dose cytarabine achieves high response rates with a manageable toxicity profile and low induction mortality in elderly pts with previously untreated AML. Time-to-event parameters will be provided with more extensive follow up. Disclosures: Off Label Use: Clofarabine and Decitabine in AML. Kantarjian:Genzyme: Consultancy, Research Funding. Faderl:Genzyme: Consultancy, Research Funding; Eisai: Research Funding, Speakers Bureau.

Frontline Therapy for Older Patients (pts) with Acute Myeloid Leukemia (AML): Clofarabine Plus Low-Dose Cytarabine Induction Followed by Prolonged Consolidation with Clofarabine Plus Low-Dose Cytarabine Alternating with Decitabine

Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 336-336 ◽  
Author(s):  
Stefan Faderl ◽  
Farhad Ravandi ◽  
Guillermo Garcia-Manero ◽  
Xuelin Huang ◽  
Elias Jabbour ◽  
...  
Keyword(s):  
Overall Survival ◽  
Research Funding ◽  
Median Overall Survival ◽  
Low Dose ◽  
Response Rates ◽  
Newly Diagnosed ◽  
Secondary Aml ◽  
Prolonged Consolidation ◽  
Low Dose Cytarabine

Abstract Abstract 336 Standard therapy (e.g. “3+7”) of newly diagnosed older pts (≥ 60 yrs) with AML is characterized by low response rates, short response durations, and substantial toxicities. New approaches are therefore actively explored in clinical trials. Clofarabine is a second generation deoxyadenosine nucleoside analogue with activity in older pts with frontline AML and presence of unfavorable prognostic factors. In our experience, the combination of clofarabine with low-dose cytarabine achieved higher response rates at no increase of toxicity compared with clofarabine alone (Faderl S et al. Blood 2008). Based on the initial experience, we have designed a combination of lower-dose clofarabine plus low-dose cytarabine induction followed by a prolonged consolidation of these drugs alternating with decitabine to improve survival and maintain the high response rates from the earlier study. Pts were eligible if ≥ 60 yrs of age with newly diagnosed AML. Pts were excluded for ECOG PS > 2, creatinine > 1.5 mg/dL, cardiac ejection fraction < 40%, and prior therapy with clofarabine or decitabine. Induction therapy consisted of clofarabine 20mg/m2 i.v daily × 5 days plus cytarabine 20mg s.c. twice daily × 10 days. Responding pts could receive up to 17 courses of consolidation therapy of clofarabine plus cytarabine (over 3 and 7 days, respectively) during courses 1–2, 6–8, 12–14 alternating with decitabine 20mg/m2 i.v. daily for 5 days during courses 3–5, 9–11, and 15–17. All pts received antibiotic prophylaxis with levofloxacin, valacyclovir and itraconazole (or equivalent). Fifty-nine pts have been accrued with a median age of 70 yrs (range 60–81), of whom 17 pts (29%) were ≥ 75 yrs. Eleven pts (19%) had a PS of 2. Seven pts (12%) had a WBC of > 20,000/mcl at diagnosis. Thirty pts (51%) had abnormal cytogenetics. Molecular profile: FLT3/ITD 5 pts (9%), FLT3/D835 2 (4), NPM1 6 (13), Ras 2 (4). Thirteen pts (22%) had prior MDS (4 pts prior azacitidine; 2 pts prior lenalidomide) and 17 pts (29%) had secondary AML (Hx of prior chemo and/or XRT). Of 57 pts evaluable for response, 35 (61%) achieved CR and 4 (7%) CRp for an ORR of 68%. Six pts (11%) required more than one course to response. The ORR for pts with diploid vs abnormal cytogenetics was 79% vs 57%; for pts with prior MDS 46% vs 82% for pts with neither MDS nor secondary AML. All 7 pts with a FLT3 mutation responded. With a median follow up of 11.6 months (1.1-20.2+), 16 pts relapsed. Responses (CR) are ongoing in 19 pts. Median CR duration is 14.1 mos (1.8-16.4). Six pts (10%) died on study. Only one pt suffered an early death ≤ 28 days from induction (C1D26). Deaths were due to myelosuppression-associated infectious complications. Median overall survival for all 59 pts was 18.1 mos (0.8-20.2+). Median overall survival for responding patients has not been reached. The median number of consolidation cycles received by pts in CR/CRp was 4 (0-14). Fifteen of these pts have so far received at least 6 consolidation cycles. Most toxicities were ≤ grade 2 and included rash (64%), nausea (61%), transaminase elevations (58%), bilirubinemia (51%), diarrhea (32%), mucositis, creatinine evelations, and headache (12% each). Among toxicities > grade 2, transaminase elevations (14%) and bilirubinemia (5%) were most frequent. One pt (65 yr old female) experienced renal failure and pulmonary edema shortly following start of the induction. Myelosuppression and neutropenic fever were common, but prolonged myelosuppression in responders was rare. In summary, clofarabine plus low-dose cytarabine achieves high response rates with a manageable toxicity profile and low induction mortality in pts ≥ age 60 with previously untreated AML. Longer follow up and comparisons with conventional therapy will help establish whether or not this combination also has a survival advantage. Disclosures: Faderl: Genzyme: Honoraria, Research Funding; Eisai: Research Funding. Off Label Use: clofarabine and decitabine in AML. Kantarjian:Genzyme: Research Funding; Eisai: Research Funding.

Application of a Validated Predictive Model for Venous Thromboembolism in Cancer to Patients with Multiple Myeloma

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 534-534
Author(s):  
Natasha Catherine Edwin ◽  
Jesse Keller ◽  
Suhong Luo ◽  
Kenneth R Carson ◽  
Brian F. Gage ◽  
...  
Keyword(s):  
High Risk ◽  
Research Funding ◽  
Risk Group ◽  
High Risk Group ◽  
Low Risk ◽  
Intermediate Risk ◽  
Discriminative Ability ◽  
Blood Institute ◽  
C Statistic

Abstract Background Patients with multiple myeloma (MM) have a 9-fold increased risk of developing venous thromboembolism (VTE). Current guidelines recommend pharmacologic thromboprophylaxis in patients with MM receiving an immunomodulatory agent in the presence of additional VTE risk factors (NCCN 2015, ASCO 2014, ACCP 2012). However, putative risk factors vary across guidelines and no validated VTE risk tool exists for MM. Khorana et al. developed a VTE risk score in patients with solid organ malignancies and lymphoma (Blood, 2008). We sought to apply the Khorana et al. score in a population with MM. Methods We identified patients diagnosed with MM within the Veterans Health Administration (VHA) between September 1, 1999 and December 31, 2009 using the International Classification of Diseases (ICD)-03 code 9732/3. We followed the cohort through October 2014. To eliminate patients with monoclonal gammopathy of undetermined significance and smoldering myeloma, we excluded patients who did not receive MM-directed therapy within 6 months of diagnosis. We also excluded patients who did not have data for hemoglobin (HGB), platelet (PLT) count, white blood count (WBC), height and weight, as these are all variables included in the Khorana et al. risk model. Height and weight were assessed within one month of diagnosis and used to calculate body mass index (BMI). We measured HGB, PLT count, and WBC count prior to treatment initiation: within two months of MM diagnosis. A previously validated algorithm, using a combination of ICD-9 code for VTE plus pharmacologic treatment for VTE or IVC filter placement, identified patients with incident VTE after MM diagnosis (Thromb Res, 2015). The study was approved by the Saint Louis VHA Medical Center and Washington University School of Medicine institutional review boards. We calculated VTE risk using the Khorana et al. score: We assigned 1 point each for: PLT ≥ 350,000/μl, HGB < 10 g/dl, WBC > 11,000/μl, and BMI ≥ 35 kg/m2. Patients with 0 points were at low-risk, 1-2 points were considered intermediate-risk and ≥3 points were termed high-risk for VTE. We assessed the relationship between risk-group and development of VTE using logistic regression at 3- and 6-months. We tested model discrimination using the area under the receiver operating characteristic curve (concordance statistic, c) with a c-statistic range of 0.5 (no discriminative ability) to 1.0 (perfect discriminative ability). Results We identified 1,520 patients with MM: 16 were high-risk, 802 intermediate-risk, and 702 low-risk for VTE using the scoring system in the Khorana et al. score. At 3-months of follow-up, a total of 76 patients developed VTE: 27 in the low-risk group, 48 in the intermediate-risk group, and 1 in the high-risk group. At 6-months of follow-up there were 103 incident VTEs: 41 in the low-risk group, 61 in the intermediate-risk group, and 1 in the high-risk group. There was no significant difference between risk of VTE in the high- or intermediate-risk groups versus the low-risk group (Table 1). The c-statistic was 0.56 at 3-months and 0.53 at 6-months (Figure 1). Conclusion Previously, the Khorana score was developed and validated to predict VTE in patients with solid tumors. It was not a strong predictor of VTE risk in MM. There is a need for development of a risk prediction model in patients with MM. Figure 1. Figure 1. Disclosures Carson: American Cancer Society: Research Funding. Gage:National Heart, Lung and Blood Institute: Research Funding. Kuderer:Janssen Scientific Affairs, LLC: Consultancy, Honoraria. Sanfilippo:National Heart, Lung and Blood Institute: Research Funding.

scholarly journals Phase 1/2 Study of Venetoclax with Low-Dose Cytarabine in Treatment-Naive, Elderly Patients with Acute Myeloid Leukemia Unfit for Intensive Chemotherapy: 1-Year Outcomes

Blood ◽  
2017 ◽  
Vol 130 (Suppl_1) ◽  
pp. 890-890
Author(s):  
Andrew Wei ◽  
Stephen A. Strickland ◽  
Gail J. Roboz ◽  
Jing-Zhou Hou ◽  
Walter Fiedler ◽  
...  
Keyword(s):  
Myeloid Leukemia ◽  
Research Funding ◽  
Low Dose ◽  
Intensive Chemotherapy ◽  
Employment Equity ◽  
Advisory Committees ◽  
Treatment Naïve ◽  
Equity Ownership ◽  
Low Dose Cytarabine

Abstract Background: Older patients with acute myeloid leukemia (AML) who are ineligible for intensive chemotherapy are unlikely to achieve remission with available therapy and have unacceptably short survival. Venetoclax (VEN) is a small molecule inhibitor of BCL-2 that achieved remission rates of &gt;60% combined with low-dose cytarabine (LDAC). Presented are long-term outcomes, including 1-year overall survival (OS) and biomarker analyses. Methods: This phase 1b/2, open-label study (NCT02287233) evaluates the safety and preliminary efficacy of orally administered VEN combined with LDAC in patients ≥65 years with previously untreated AML (except for hydroxyurea). Patients were ineligible for intensive chemotherapy because of comorbidity or other factors and had an ECOG performance score of 0-2, with adequate hepatic and renal function. Exclusion criteria were acute promyelocytic leukemia, active CNS involvement with AML, concominant use of moderate or strong CYP3A inhibitors, or prior treament with cytarabine for a preexisting myeloid disorder. Prior treatment for myelodysplastic syndrome (MDS) was allowed. In cycle 1, VEN was started at 50 mg/day PO and increased over a 5-day ramp-up to reach the designated cohort dose of 600 or 800 mg/day on day 6, which was continued through day 28. In subsequent cycles, the desingated dose of VEN 600 or 800 mg/day was administered on days 1-28. LDAC 20 mg/m2/day SQ was given on days 1-10 of each cycle. Preliminary efficacy was assessed as the overall response rate (ORR, which included complete remission [CR], CR with incomplete blood count recovery [CRi], and partial remission [PR]). Adverse events (AEs) and laboratory values were monitored. Exploratory analysis of biomarkers (eg, cytogenetics, molecular markers) was performed to identify potential predictors of clinical outcomes. Results: Data cutoff was May 30, 2017. All 71 patients were enrolled ≥1 year prior (46 [65%] male; median age, 74 years [range, 66-87 years]): 10 received VEN 800 mg and 61 received VEN 600 mg, the recommended phase 2 dose. Thirty-three patients (47%) had a history of antecedent hematologic disorder (AHD), most commonly MDS. Among 61 patients given VEN 600 mg, median time on VEN treatment was 6 months (range, &lt;1 to 21 months). Thirty-eight (62%) of these patients achieved CR/CRi with a median duration of CR/CRi of 14.9 months (95% CI, 5.6 months to not reached [NR]; Figure). Best responses were 26% CR, 36% CRi, and 2% PR. Median OS was 11.4 months (95% CI, 5.7-15.7 months); the observed 12-month OS was 46% (95% CI, 33-58%). Only 1 patient has subsequently undergone bone marrow transplantation. Treatment-emergent grade 3/4 AEs (in ≥20% of 61 patients) were thrombocytopenia (59%), neutropenia (46%), febrile neutropenia (36%), anemia (28%), and decreased WBC count (26%). One case (2%) of tumor lysis syndrome occurred. Serious AEs (in ≥3 of 61 patients) were febrile neutropenia (20%), malignant neoplasm progression (13%), lung infection/pneumonia (13%), and sepsis (7%). The 30-day mortality rate was 3%; causes of death were disease progression (n=1) and lung infection (n=1). Common recurrent mutations in 53 patients who received VEN 600 mg are shown in the Table. All patients with an NPM1 mutation (including 3 with a co-mutation in FLT3-ITD) achieved CR/CRi. Patients with DNMT3A, FLT3-ITD, and SRSF2 mutations had CR/CRi rates of ≥75%, whereas those with TP53 mutations had the lowest CR/CRi rates of 44%. For patients with CR/CRi, median OS was 18.4 months (95% CI, 13.5 months to NR). The 12-month OS rate for patients in the 600-mg VEN cohort who achieved CR/CRi was 70.4% from Kaplan-Meier estimates, with 11 deaths. Among 19 patients who received study treatment ≥12 months, 17 remain alive. The longest, ongoing, disease-free follow-up after treatment completion is 12 months. Conclusions: The safety profile of VEN 600 mg/day plus LDAC was acceptable for elderly patients with treatment-naive AML who were ineligible for intensive chemotherapy. After ≥1 year of follow-up, the observed median OS was 11.4 months. This cohort included 44% (27/61) of patients with AHDs. Corelations of specified AML mutations with response and duration should be confirmed in later trials. Due to the observced CR/CRi rate of 62%, extended duration of response, and encouraging OS in a cohort of patients with particularly poor-risk features, the 600-mg dose of VEN combined with LDAC is being tested in an ongoing phase 3 study. Figure Figure. Disclosures Wei: AbbVie, Celgene, Novartis, Amgen, Servier: Honoraria; AbbVie, Celgene, Servier: Research Funding; AbbVie, Celgene, Novartis, Amgen, Servier: Membership on an entity's Board of Directors or advisory committees. Strickland: Boehringer-Ingelheim: Consultancy, Research Funding; Sunesis: Consultancy, Research Funding; Novartis: Consultancy; Tolero: Consultancy; Astellas: Consultancy; CTI BioPharma: Consultancy; Baxalta: Consultancy. Roboz: AbbVie, Agios, Amgen, Amphivena, Array Biopharma Inc., Astex, AstraZeneca, Celator, Celgene, Clovis Oncology, CTI BioPharma, Genoptix, Immune Pharmaceuticals, Janssen Pharmaceuticals, Juno, MedImmune, MEI Pharma, Novartis, Onconova, Pfizer, Roche Pharmace: Consultancy; Cellectis: Research Funding. Hou: Teva Oncology, Seattle Genetics: Speakers Bureau. Fiedler: Amgen, Pfizer: Research Funding; Amgen, Gilead, GSO, Teva, Jazz Pharmaceuticals: Other: Support for meeting attendance; Amgen: Patents & Royalties; Amgen, ARIAD/Incyte: Membership on an entity's Board of Directors or advisory committees. Lin: Jazz Pharmaceuticals: Consultancy. Walter: ADC Therapeutics: Research Funding; Aptevo Therapeutics: Research Funding. Chyla: Abbvie: Employment, Equity Ownership. Popovic: AbbVie: Employment, Equity Ownership. Fakouhi: AbbVie: Employment, Equity Ownership. Shah: AbbVie: Employment, Equity Ownership. Dunbar: AbbVie: Employment, Equity Ownership. Xu: AbbVie: Employment, Equity Ownership. Mabry: AbbVie: Employment, Equity Ownership. Hayslip: AbbVie: Employment, Equity Ownership.

scholarly journals A Phase 2 Randomized Study of Low Dose Ara-C with or without Glasdegib (PF-04449913) in Untreated Patients with Acute Myeloid Leukemia or High-Risk Myelodysplastic Syndrome

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 99-99 ◽  
Author(s):  
Jorge E. Cortes ◽  
Florian H. Heidel ◽  
Michael Heuser ◽  
Walter Fiedler ◽  
B. Douglas Smith ◽  
...  
Keyword(s):  
Acute Myeloid Leukemia ◽  
High Risk ◽  
Myeloid Leukemia ◽  
Research Funding ◽  
Low Dose ◽  
P Value ◽  
Employment Equity ◽  
Equity Ownership ◽  
Acute Myeloid

Abstract Background: The Hedgehog signaling pathway (HhP) is aberrantly activated in leukemias and myelodysplastic syndrome (MDS), promoting cancer stem cell maintenance. HhP inhibition reduces leukemic stem cells. Glasdegib is a potent, selective, oral HhP inhibitor, with activity in pre-clinical and clinical studies. The addition of glasdegib to standard chemotherapy (CT) has an acceptable safety profile and appears to have clinical activity in MDS and acute myeloid leukemia (AML). Methods: In this study (NCT01546038), previously untreated AML or high-risk MDS patients (pts) ineligible for intensive CT were randomized 2:1 to receive low-dose cytarabine (LDAC) 20 mg subcutaneously twice a day x 10 days q28 days + oral glasdegib 100 mg daily or LDAC alone for as long as pts received clinical benefit. The primary endpoint was overall survival (OS). The final analysis was conducted after completion of recruitment (Oct 2015) and at least 92 OS events. Results: As of Apr 2016, 132 pts (116 AML, 16 MDS) were randomized to LDAC + glasdegib (n = 88) or LDAC alone (n = 44) (stratified as good/intermediate [int.] vs poor risk) (Table). Demographic and baseline characteristics were similar between arms in median age, baseline cytogenetic risk, and diagnosis. Eighty-four pts received LDAC + glasdegib and 41 pts LDAC alone (7 randomized/not treated pts were followed for survival). Median treatment duration was 83 days for LDAC + glasdegib and 47 days for LDAC alone; median follow up was 14.3 months and 12.4 months, respectively. In the glasdegib arm, 12 pts were continuing treatment and 25 were in follow up; in the LDAC arm, 1 pt was on treatment and 5 in follow up. Cytopenias and gastrointestinal toxicities were the adverse events (AEs) occurring more frequently in the LDAC + glasdegib arm. Hh-associated AEs in the glasdegib arm included dysgeusia (23.8%), muscle spasms (20.2%) and alopecia (10.7%). Serious AEs of febrile neutropenia were more frequent in the glasdegib arm, but sepsis rates were lower and pneumonia rates were similar. The most common cause of death was disease progression in both arms. Grade 2-4 QTcF prolongation was more frequent in the LDAC arm. Investigator-reported complete response (CR) rates were numerically higher for LDAC + glasdegib (n = 17, 15%) vs LDAC alone (n = 1, 2.3%), p-value 0.0142. Based on intent to treat analysis of 96 events, median OS (mOS) for LDAC + glasdegib was 8.3 (80% confidence interval [CI] 6.9, 9.9) vs 4.9 months (80% CI 3.5, 6.0) for LDAC alone (HR 0.511, 80% CI 0.386, 0.675; one-sided log rank p-value 0.0020 stratified by cytogenetic risk). For good/int. risk, mOS for LDAC + glasdegib was 12.2 vs 6.0 months for LDAC alone (HR 0.464, p-value 0.0035). For poor risk, mOS for LDAC + glasdegib was 4.4 vs 2.3 months (HR 0.575, p-value 0.0422). In AML pts, mOS for LDAC + glasdegib was 8.3 vs 4.3 months for LDAC alone (HR 0.462, p-value 0.0004). Conclusions: The addition of glasdegib to LDAC for AML and high-risk MDS pts improved OS compared with LDAC alone. The improvement was consistent among subgroups, particularly in good/int. risk pts. Treatment was associated with an acceptable safety profile. The addition of glasdegib to LDAC may be a treatment option for pts with AML or high-risk MDS. Disclosures Cortes: ARIAD: Consultancy, Research Funding; Bristol-Myers Squib: Consultancy, Research Funding; Novartis: Consultancy, Research Funding; Pfizer: Consultancy, Research Funding; Teva: Research Funding. Heuser:Tetralogic: Research Funding; Celgene: Honoraria; Bayer Pharma AG: Research Funding; Novartis: Consultancy, Research Funding; Pfizer: Research Funding; Karyopharm Therapeutics Inc: Research Funding; BerGenBio: Research Funding. Fiedler:Gilead: Other: Travel; Novartis: Consultancy; Ariad/Incyte: Consultancy; Teva: Other: Travel; Pfizer: Research Funding; Kolltan: Research Funding; Amgen: Consultancy, Other: Travel, Patents & Royalties, Research Funding; GSO: Other: Travel. Smith:Actinium Pharmaceuticals, Inc.: Research Funding. Robak:Pfizer: Research Funding. Montesinos Fernandez:Gamida Cell: Consultancy. Ma:Pfizer: Employment, Equity Ownership. Shaik:Pfizer: Employment, Equity Ownership. Zeremski:Pfizer: Employment, Equity Ownership. O'Connell:Pfizer: Employment, Equity Ownership. Chan:Pfizer: Employment, Equity Ownership.

scholarly journals Low Von Willebrand Factor: Cut-Off Value for Diagnosis and Risk Score to Predict Bleeding Incidence

Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 18-19
Author(s):  
Ferdows Atiq ◽  
Esmee Wuijster ◽  
Moniek P.M. de Maat ◽  
Marieke J.H.A. Kruip ◽  
Marjon H. Cnossen ◽  
...  
Keyword(s):  
High Risk ◽  
Risk Score ◽  
Research Funding ◽  
Low Risk ◽  
Intermediate Risk ◽  
Spontaneous Bleeding ◽  
High Risk Patients ◽  
Risk Patients ◽  
Surgical Bleeding

Introduction Although large studies have recently provided valuable insights on the diagnosis, bleeding phenotype, and treatment outcomes of VWD patients, these aspects remain poorly understood in individuals with low VWF. Firstly, there is no clear evidence which cut-off value should be used to diagnose low VWF. Although 0.50 IU/mL is the most recommended cut-off value, some centers use the lower limit of normal (0.60 IU/mL). Secondly, the incidence of post-surgical bleeding, postpartum hemorrhage (PPH) and traumatic- or spontaneous bleeding after diagnosis of low VWF are still unknown. Lastly, it is hard to predict which individuals with low VWF have an increased bleeding risk. Therefore, we investigated the bleeding phenotype of individuals with historically lowest VWF levels of 0.31-0.50 IU/mL and 0.51-0.60 IU/mL, and the incidence of post-surgical bleeding, PPH and traumatic- and spontaneous bleeding after their initial diagnosis of "low VWF". Methods We performed a retrospective cohort study from January 2007 to November 2019 at the Erasmus MC, University Medical Center Rotterdam. All patients evaluated for the presence of a bleeding disorder with VWF antigen (VWF:Ag) and/or VWF activity (VWF:Act) and/or VWF collagen binding (VWF:CB) levels between 0.31-0.60 IU/mL, were included. Patients with VWF:Ag and/or VWF:Act and/or VWF:CB ≤0.30 IU/mL, acquired VWD and those with a concomitant bleeding disorder were excluded. For each individual we collected data from electronic patient files on baseline characteristics, reason for referral, family history of bleeding disorders, ISTH-BAT and laboratory measurements at diagnosis. Retrospective follow-up started from initial date of low VWF diagnosis through November 2019, during which we collected data on surgical procedures, pregnancies, and incidence of spontaneous- and traumatic bleeding. Results We included 439 patients; 269 patients with historically lowest VWF levels 0.31-0.50 IU/mL and 170 patients 0.51-0.60 IU/mL. Mean age at diagnosis was 28.8 ±17.7 years. Most patients were female (74.3%) and had blood group O (76.4%, Table 1). The bleeding score (BS) was similar in patients with historically lowest VWF levels of 0.31-0.50 IU/mL (3.7 ±3.0) and 0.51-0.60 IU/mL (4.0 ±2.9, p=0.209, Table 1). During the mean follow-up period of 6.3 ±3.7 years, 259 surgical procedures were performed in 146 patients, 81 deliveries in 56 women, and 109 spontaneous- or traumatic bleedings in 71 patients. The incidence of post-surgical bleeding was 7 (2.7%) during follow-up, whereas 8 deliveries (10%) were complicated by PPH. Overall, 65 out of 439 patients (14.8%) had a bleeding episode requiring treatment during follow-up, resulting in an incidence of bleeding requiring treatment of 0.5 ±1.9 per patient per decade. No difference was found in the incidence of bleeding requiring treatment between patients with historically lowest VWF levels of 0.31-0.50 IU/mL and 0.51-0.60 IU/mL (Figure 2A, p=0.154). We found that referral for a personal bleeding diathesis, a younger age at diagnosis and an abnormal BS at diagnosis were strong and independent risk factors for bleeding requiring treatment during follow-up, respectively HR=2.32 (95%CI: 1.16-4.63), HR=1.18 (95%CI: 1.01-1.38) and HR=1.77 (95%CI: 1.04-3.01). These risk factors were combined to develop a risk score to identify low VWF patients with an increased risk for bleeding requiring treatment (Figure 2B). The risk score performed excellent to differentiate in bleeding requiring treatment between low risk, intermediate risk and high risk patients (p&lt;0.001, Figure 2C). The number of patients with bleeding requiring treatment was 8/126 (6.3%) in patients with low risk, 18/143 (12.6%) in intermediate risk and 39/170 (22.9%) in high risk patients (p&lt;0.001). Likewise, the incidence of bleeding requiring treatment per patient per decade was 0.22 ±1.08 in low risk, 0.28 ±1.25 in intermediate risk and 0.87 ±2.61 in high risk patients (p=0.004, Figure 2D). Conclusion To conclude, there is no difference in the bleeding phenotype of individuals with historically lowest VWF levels of 0.31-0.50 IU/mL and 0.51-0.60 IU/mL. Therefore, the cut-off value to diagnose low VWF should be set at 0.60 IU/mL. Furthermore, the risk score developed in the current study may assist to identify low VWF patients with low, intermediate and high risk for future bleeding. Disclosures Atiq: SOBI: Other: travel grant; CSL Behring: Research Funding. Kruip:Boehringer Ingelheim: Research Funding; Pfizer: Research Funding; Bayer: Research Funding; Daiichi Sankyo: Research Funding; SOBI: Research Funding; Bayer: Speakers Bureau. Cnossen:Takeda: Research Funding; Shire: Research Funding; Baxter: Research Funding; Bayer: Research Funding; Sobi: Research Funding; CSL behring: Research Funding; Nordic Pharma: Research Funding; Novo Nordisk: Research Funding; Pfizer: Research Funding. Leebeek:CSL Behring: Research Funding; Shire/Takeda: Research Funding; Uniqure: Consultancy; Shire/Takeda: Consultancy; Novo Nordisk: Consultancy; SOBI: Other: Travel grant; Roche: Other: DSMB member for a study.

scholarly journals Use of Artificial Intelligence Electrocardiography to Predict Atrial Fibrillation (AF) in Patients with Chronic Lymphocytic Leukemia (CLL)

Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 50-51
Author(s):  
Georgios Christopoulos ◽  
Zachi I. Attia ◽  
Peter A. Noseworthy ◽  
Timothy G. Call ◽  
Wei Ding ◽  
...  
Keyword(s):  
Artificial Intelligence ◽  
High Risk ◽  
Sinus Rhythm ◽  
Board Of Directors ◽  
Research Funding ◽  
Intermediate Risk ◽  
Advisory Committees ◽  
Increased Risk ◽  
Very High

Background: Clinical factors including previous history of AF, heart failure, hypertension, valvular heart disease, increased age and male gender increase the risk of AF in CLL patients (Shanafelt, Leukemia and Lymphoma 2017). Treatment with Bruton tyrosine kinase inhibitors (BTKi) such as ibrutinib has also been associated with an increased risk of AF in CLL. We evaluated the role of artificial intelligence electrocardiography (AI-ECG) in predicting ibrutinib-induced AF (and, for reference, AF unrelated to ibrutinib) in patients with CLL. Methods: We identified two cohorts of CLL patients using the Mayo Clinic CLL Database. Cohort 1 included patients evaluated within 12 months of CLL diagnosis who did not ever receive ibrutinib. Cohort 2 included patients who were treated with ibrutinib. The electrocardiographic signature of AF in sinus rhythm was detected by an AI-ECG algorithm previously developed using a convolutional neural network (Attia, Lancet 2019). The baseline AI-ECG AF score (positive defined as &gt;0.10 on a scale of 0-1 which offers best balance between sensitivity and specificity per Attia et al.) was computed based on ECGs obtained within 10 years prior to CLL diagnosis (Cohort 1) or 10 years prior to initiation of ibrutinib therapy (Cohort 2). Patients with AF at baseline, missing data, or with ECGs previously used to train the AI algorithm were excluded. Reverse Kaplan Meier diagrams were plotted for both cohorts grouped by AI-ECG positivity. Cox proportional hazards were fitted to assess the predictive ability of AI-ECG in both cohorts. Results: After screening 2,739 patients and applying exclusion criteria (126 patients had baseline AF) a total of 1,149 patients with median 4 (interquartile range [IQR] 2-9) baseline ECGs were included in the analysis (Figure 1A). Cohort 1 included 951 patients with a median follow up of 3.0 (IQR 0.6-7.0) years and positive baseline AI-ECG in 546 (57%) patients. Cohort 2 included 198 patients with a median follow up of 1.6 (IQR 0.7-3.2) years and positive baseline AI-ECG in 91 (46%) patients. In Cohort 1, the median age was 67 years (IQR 58-72), 681 (72%) of patients were men, 68% had low/intermediate risk CLL-International Prognostic Index (IPI), and 32% had high/very high-risk CLL-IPI. In Cohort 2, the median age was 69 years (IQR 62-75), 139 (70%) of patients were men, 13% had low/intermediate risk CLL-IPI, and 87% had high/very high-risk CLL-IPI. AF occurred during follow up in 164 patients (17%) in Cohort 1 and 46 patients (23%) in Cohort 2. In both Cohorts 1 and 2, a positive baseline AI-ECG significantly increased the incidence of AF during follow up (log rank &lt;0.001) (Figure 1B and C). Hazard ratios (for positive vs. negative AI-ECG) were 33.9 (95% confidence interval [CI] 15.0-76.6) for Cohort 1 and 14.8 (95% CI 5.3-41.3) for Cohort 2. Conclusion: The addition of AI to a standard 12-lead ECG obtained during normal sinus rhythm - an inexpensive and ubiquitous test - predicts the occurrence of future AF in patients with CLL. This holds true irrespective of BTKi -based therapy and has important implications for the management of CLL patients. Disclosures Ding: Merck: Membership on an entity's Board of Directors or advisory committees, Research Funding; DTRM: Research Funding; Astra Zeneca: Research Funding; Abbvie: Research Funding; Octapharma: Membership on an entity's Board of Directors or advisory committees; MEI Pharma: Membership on an entity's Board of Directors or advisory committees; alexion: Membership on an entity's Board of Directors or advisory committees; Beigene: Membership on an entity's Board of Directors or advisory committees. Kenderian:BMS: Research Funding; Gilead: Research Funding; Novartis: Patents & Royalties, Research Funding; Mettaforge: Patents & Royalties; Juno: Research Funding; MorphoSys: Research Funding; Lentigen: Research Funding; Sunesis: Research Funding; Tolero: Research Funding; Kite: Research Funding; Humanigen: Consultancy, Patents & Royalties, Research Funding; Torque: Consultancy. Wang:Novartis: Research Funding; Innocare: Research Funding; Incyte: Research Funding. Kay:Juno Theraputics: Membership on an entity's Board of Directors or advisory committees; Oncotracker: Membership on an entity's Board of Directors or advisory committees; Dava Oncology: Membership on an entity's Board of Directors or advisory committees; Rigel: Membership on an entity's Board of Directors or advisory committees; Morpho-sys: Membership on an entity's Board of Directors or advisory committees; Cytomx: Membership on an entity's Board of Directors or advisory committees; Agios Pharma: Membership on an entity's Board of Directors or advisory committees; Astra Zeneca: Membership on an entity's Board of Directors or advisory committees; Sunesis: Research Funding; Abbvie: Research Funding; MEI Pharma: Research Funding; Pharmacyclics: Membership on an entity's Board of Directors or advisory committees, Research Funding; Acerta Pharma: Research Funding; Bristol Meyer Squib: Membership on an entity's Board of Directors or advisory committees, Research Funding; Tolero Pharmaceuticals: Membership on an entity's Board of Directors or advisory committees, Research Funding. Kapoor:Cellectar: Consultancy; Janssen: Research Funding; Sanofi: Consultancy, Research Funding; Amgen: Research Funding; Takeda: Honoraria, Research Funding; Celgene: Honoraria; GlaxoSmithKline: Research Funding. Parikh:MorphoSys: Research Funding; Janssen: Honoraria, Research Funding; AstraZeneca: Honoraria, Research Funding; Merck: Research Funding; AbbVie: Honoraria, Research Funding; Ascentage Pharma: Research Funding; Genentech: Honoraria; Verastem Oncology: Honoraria; GlaxoSmithKline: Honoraria; TG Therapeutics: Research Funding; Pharmacyclics: Honoraria, Research Funding.

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