Pooled safety analysis of single-agent lurbinectedin versus topotecan (Results from a randomized phase III trial CORAIL and a phase II basket trial).

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. 3635-3635
Author(s):  
Alexandra Leary ◽  
Stephanie Gaillard ◽  
Ignace Vergote ◽  
Jose Trigo ◽  
Carmen Maria Kahatt ◽  
...  

3635 Background: Lurbinectedin (L), an inhibitor of active transcription, has shown activity in second-line (2L) small cell lung cancer (SCLC) (ASCO 2019). Topotecan (T) is the only approved drug in 2L SCLC and is also used in platinum resistant ovarian cancer (PROC). Methods: This pooled safety analysis includes data from 554 patients (pts) treated with L at 3.2 mg/m2 Day 1 q3wk 1-h (no primary prophylaxis with G-CSF required): 335 with selected solid tumors (9 indications, including 105 pts with SCLC) from a phase II Basket study and 219 with PROC in the phase III CORAIL study. An indirect exploratory comparison (pooled data from CORAIL + Basket) and a direct comparison (data from CORAIL) of L vs. T are presented. Results: Most common adverse events with L were grade 1/2 fatigue, nausea and vomiting. Treatment-related (L/T): dose reductions: 22.9/48.3%, delays: 25.8/52.9%, grade ≥3 serious adverse events (SAEs): 15.0/32.2%, discontinuations: 3.2/5.7%, deaths: 1.3/1.5%, G-CSF use: 23.8/70.1%, and transfusions: 15.9/52.9%. Conclusions: Lurbinectedin has a predictable and manageable safety profile. A significant safety advantage was observed when lurbinectedin was compared with topotecan in the CORAIL trial in terms of hematological toxicities. With the limitations of indirect comparisons, in the pooled safety analysis, fewer lurbinectedin-treated pts had severe hematological toxicities, SAEs, dose adjustments, treatment discontinuations and use of supportive treatments than topotecan-treated pts. Clinical trial information: NCT02421588 and NCT02454972 . [Table: see text]

2011 ◽  
Vol 29 (7_suppl) ◽  
pp. 129-129
Author(s):  
P. Hervonen ◽  
H. Joensuu ◽  
T. K. Joensuu ◽  
P. Nyandoto ◽  
M. Luukkaa ◽  
...  

129 Background: Docetaxel (T) administered at every three weeks is standard treatment for advanced HRPC. We compared 2-weekly to 3-weekly T as first- or second-line chemotherapy of advanced HRPC in this prospective randomized multicenter trial. Methods: 360 pts were randomly allocated to receive T 75 mg/m2 i.v. d1 q3 wks (tT) or 50 mg/m2 i.v. d1 and d 14, q4 wks (bT) from March 2004 to May 2009. Prednisolon 10 mg/day was administered in both groups. The groups were well balanced according to the WHO performance status, mean age (70 vs. 68, range 45–87), and the median serum PSA level at study entry (109 vs. 98 μ g/L, range 11–1,490). The primary endpoint was TTF. Study identifier: NCT00255606 . Results: 158 pts (tT, 79; bT, 79) were included in this preplanned interim safety analysis. 567 and 487 cycles were administered in the tT and bT groups, respectively. The most common grade 3–4 adverse events (expressed as %/cycles) in tT /bT were neutropenia 20%/14%, infection with/without neutropenia 8%/3%, fatigue 3%/ 3%, febrile neutropenia 2%/1%, and bone pain 2%/1%. Serious adverse events occurred more frequently in tT (n=60, 10.6% of cycles) than in bT (n=29, 6.0%, p=0.012). One pt. died from coronary infarction and one was diagnosed with ALL (both in bT group). 30 pts (38%) in bT group and 22 pts (28%) in tT group were receiving treatment at 6 months. (p=0.176). Conclusions: Biweekly T has been better tolerated than the conventional triweekly T with fewer serious adverse events and may be associated with similar efficacy. [Table: see text]


Blood ◽  
2004 ◽  
Vol 104 (11) ◽  
pp. 4827-4827 ◽  
Author(s):  
Asher Alban Chanan-Khan ◽  
Blanche Mavromatis ◽  
Kanti R. Rai ◽  
Philomena Casey ◽  
Steven Novick ◽  
...  

Abstract Bcl-2 is an anti-apoptotic protein closely linked to chemotherapy resistance and inferior survival in patients (pts) with CLL. Genasense(GNS) enhances apoptosis induced by fludarabine (F), dexamethasone, and rituximab (R) in vitro, and has limited single-agent activity in heavily pre-treated CLL pts. Down-regulation of Bcl-2 may further sensitize CLL cells to apoptosis induced by F and R without exposing subjects to the toxicity of alkylating agents. CLL and NHL pts occasionally exhibit a “cytokine release syndrome” (spiking fever, back pain, and occasional hypotension) with GNS treatment. We hypothesized that a “step dosing” approach with GNS, similar to that sometimes used for R, could ameliorate these effects and allow safe and effective combination of this agent with F and R. We are currently evaluating this combination in pts with either previously untreated (UT) or relapsed, previously treated (PT) CLL who require systemic treatment. Eligibility includes: plts ≥ 50,000/mm3; serum Cr ≤ 1.5 mg/dL; adequate organ function; negative Coombs; no history of autoimmune hemolytic anemia. In cycle 1, GNS is given by continuous intravenous infusion at 1.5 mg/kg/d days 1 to 7. R is given on a dose-escalating schema (day 4, 125 mg/m2; day 6, 250 mg/m2). F (25 mg/m2/d) is given on days 6 to 8. In subsequent 28-day cycles (up to 6), the dose of GNS is escalated to 3 mg/kg/d days 1 to7 days, with R 375 mg/m2 on day 5 and F days 5 to7. To date, 20 pts have been enrolled (17 PT and 3 UT). Characteristics included: median age, 62 yrs (range 39 to 82 yrs); Rai stage III (2 pts) and IV (6 pts). Prior to administration of either F or R, single-agent GNS treatment at the initial reduced dose in Cycle 1 resulted in a median decrease in lymphocytes of 15% (among all patients regardless of decline in lymphocyte count) (Baseline: 48.3 cells x 103/ml; day 4: 40.1 cells x 103/ml). For the 13 pts who experienced a decline in lymphocyte count in cycle 1 prior to F and R, the median percentage change was 17%, with 4 pts having a > 25% decrease. Three PT pts discontinued from study treatment prior to completing 6 cycles, 2 due to disease progression, and 1 with Grade 3 thrombocytopenia that was unresolved after 4 weeks. Among the 20 pts treated to date (9 ongoing), the most common grade 3 or higher adverse events have been neutropenia, pyrexia and thrombocytopenia. Serious adverse events have been noted in only 6 of 20 pts (all PT pts) and have included 2 pts with fever (1 neutropenic), 2 R infusion reactions, 1 lymph node abscess and 1 tumor lysis syndrome (with sepsis). Conclusions: 20 pts have been treated with combination GNS, F and R. Single-agent activity with GNS has been observed at a reduced dose of 1.5 mg/kg/d in cycle 1. The “step dosing” approach appears to be a well-tolerated, alternative approach to the administration of GNS. Further details of safety and efficacy will be presented.


Blood ◽  
2008 ◽  
Vol 112 (11) ◽  
pp. 1576-1576 ◽  
Author(s):  
Laurie H Sehn ◽  
David A Macdonald ◽  
Sheldon H. Rubin ◽  
Morel Rubinger ◽  
Kevin R Imrie ◽  
...  

Abstract Background: Despite recent improvements in therapy, follicular lymphoma (FL) remains incurable with standard treatment, warranting investigation of new approaches. Bortezomib, the first-in-class proteasome inhibitor has demonstrated promising efficacy as a single agent in heavily pretreated patients (pts) with FL. This is the first study to evaluate the safety and efficacy of the addition of bortezomib to cyclophosphamide, vincristine, prednisone and rituximab (CVP-R). Methods: This is a phase II multi-center open-label trial adding bortezomib (1.3 mg/m2 day 1&8) to standard dose C(750 mg/m2) V(1.4 mg/m2, capped at 2 mg) P(40 mg/m2 × 5) –R(375 mg/m2) for up to 8 cycles in pts with newly diagnosed stage III/IV FL requiring therapy. Planned accrual is 90 patients. A two-stage design was employed with a planned interim analysis of the first 28 patients to ensure an acceptable level of neurotoxicity (defined as less than 5/28 patients with grade 3/4 neurotoxicity after the first 4 cycles) and meaningful response rate (more than 12/28 patients with a complete response following 8 cycles), prior to enrolling remaining patients. Results: Median age of the first 28 patients was 55 years (range, 30–73). Fifty percent were male and 79% had stage IV disease. FLIPI score at study entry: low 14%, intermediate 43%, high 43%. Overall, the combination of bortezomib and CVP-R was extremely well tolerated. To date, no pts have developed grade 4 neurotoxicity and only 1/28 (4%) has developed grade 3 neurotoxicity within the first 4 cycles (neuropathic pain which resolved without need for treatment modification). The incidence of grade 1 and 2 neurotoxicity was 54% and 25% respectively. Only 3 pts discontinued therapy prematurely (2 pt refusal, 1 progressive disease). Ninety-four percent of planned bortezomib treatments in the first four cycles and 93% of vincristine doses were administered without dose reduction. Hematologic toxicity was mild, with no pts experiencing grade 3/4 anemia or thrombocytopenia. Only 2 episodes of febrile neutropenia occurred and no grade 3/4 infections were noted. Although it is too early to report on efficacy in this ongoing trial, response objectives for stage I have been met, and enrollment to stage 2 is underway. Conclusions: The addition of bortezomib to standard dose CVP-R is very well tolerated, with an acceptable level of neurotoxicity, without compromising the delivery of bortezomib or vincristine. This ongoing study will provide toxicity and efficacy data to facilitate the development of a planned phase III trial.


2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 6576-6576
Author(s):  
T. L. Koeneke ◽  
J. O. Armitage ◽  
P. J. Bierman ◽  
R. Bociek ◽  
J. M. Vose ◽  
...  

6576 Background: Arguments have been made against early phase clinical trials (CTs) as possibly being unethical because its risk may outweigh its potential benefits. Whether this is true in the light of newer biological treatment for cancer is unknown. We therefore examined the association between the incidence of serious adverse events according to type and sponsorship of CTs in pts with lymphoma. Methods: All IRB approved CTs at the University of Nebraska Medical Center from Jan 2000-June 2005 classified as therapeutic for lymphoma involving a biological agent were included. CTs were classified in two ways: by type of CTs (phase I vs II vs III) and sponsorship (Investigator-initiated vs Industry-initiated. Multivariate logistic regression was used to evaluate the association between types/sponsorship of CTs with the incidence of IRB serious adverse events (SAE; no vs yes) and fatal adverse events (FAE; no vs yes) while adjusting for age, sex, race, lymphoma type and stage, interval from dx to tx, co-morbid conditions, and previous tx. Results: 357 pts with lymphoma enrolled in 29 CTs were included. The median age of pt was 54y (21–88). 41% of the pts had follicular lymphoma, 36% diffuse large cell, 14% mantle cell and 9% were other types. 59% had Stage IV lymphoma. 71% of the pts participated in investigator-initiated CTs, while 29% participated in industry-initiated CTs. 21% of pts were enrolled in phase I, 65% in phase II and 14% in phase III studies. SAEs were seen in 49 pts (14%), while FAEs occurred in 13 pts (4%). Multivariate analysis showed the risk of having SAE was independent of the type or sponsor of CTs. Additionally, the risk of FAEs was not associated with the type of CTs. However, the risk of having FAEs was less in investigator- iniatiated CTs than in industry-iniatiated trials (Odds Ratio: 0.13 (95% CI, 0.03–0.61, p = 0.01). Conclusions: Our study showed that in CTs involving biological treatments, the incidence of SAEs was not associated with the type or sponsor of CTs suggesting that use of biological agents in phase I studies may have similar risks to phase II/III trials. Further studies should be done in other types of malignancies to evaluate further the decrease frequency of FAEs seen in investigator-initiated trials. No significant financial relationships to disclose.


2009 ◽  
Vol 27 (15_suppl) ◽  
pp. 1133-1133 ◽  
Author(s):  
S. K. Taylor ◽  
S. Chia ◽  
S. Dent ◽  
M. Clemons ◽  
P. Grenci ◽  
...  

1133 Background: Pazopanib, an oral small molecule inhibitor of VEGFR, PDGFR, and KIT, has demonstrated activity in phase I, with a recommended phase II dose of 800 mg/d (Hurwitz H et al, J Clin Oncol. 2005;23[16 suppl]:3012.1). We evaluated the activity of single agent pazopanib in recurrent or metastatic breast cancer (MBC). Methods: In this 2-stage design, patients with recurrent or MBC received pazopanib 800 mg/d. The primary endpoint was objective response rate (ORR) of 20%. Response in 3 out of 18 patients was required to go to stage 2. Treatment was continued until progression. Results: 21 patients entered stage 1; 67% were ER positive and all were HER-2-negative. Prior lines of chemotherapy were 1 in 76% and 2 in 14%. Of the 19 evaluable patients, 2 patients remain on treatment. 14 (74%) stopped due to progressive disease, 2 (10%) due to adverse events, and 1 (5%) due to patient request. Best response was partial response (PR) in 1 (5%), stable disease (SD) in 11 (58%), and progressive disease in 7 (37%). Clinical benefit rate (CR, PR, or SD for ≥ 6 months) was 26%. Median time to progression (TTP) was 3.7 months (95% C.I. 1.7 months - not reached). 9 out of 18 patients (50%) with measurable target lesions had some decrease in target lesion size. Estimated progression-free survival at 3 months was 55%, and 28% at 6 months. Adverse events were grade 3/4 elevations in AST (14%) and ALT (10%), and grade 3 hypertension and neutropenia (14% each). Other common events were grade 1/2 lymphopenia, neutropenia, diarrhea, fatigue, skin hypopigmentation, hypertension, nausea, vomiting, anorexia, and headache. Conclusions: Pazopanib is well tolerated and demonstrates activity in pretreated breast cancer. While the target ORR of 20% has not been met, rates of SD and TTP are comparable to other active agents in this setting, and therefore pazopanib may be an interesting agent for future studies in breast cancer. [Table: see text]


2012 ◽  
Vol 30 (15_suppl) ◽  
pp. 6592-6592
Author(s):  
Tapan M. Kadia ◽  
Elias Jabbour ◽  
Naveen Pemmaraju ◽  
Stefan Faderl ◽  
Gautam Borthakur ◽  
...  

6592 Background: Treatment of AML in patients (pts) > 70 yrs of age with intensive chemotherapy is associated with high rates of early mortality and little benefit. Newer, lower-intensity approaches with novel mechanisms are needed. OM is a semisynthetic plant alkaloid which has demonstrated activity in AML as a single agent and with chemotherapy. Methods: We studied a low intensity program combining subcutaneous (SQ) OM with SQ LDAC in pts >/= 60 yrs, with AML or MDS, a performance status (PS) of </=2, and adequate organ function. Initially, 6 pts were enrolled at the following doses: OM 1.25 mg/m2 SQ Q12 hrs x 3 days with AraC 20 mg SQ Q12 hrs x 7 days on a 4 week cycle. If safety is confirmed, the phase II portion would commence at the safe dose levels. Up to 12 courses can be given. The primary endpoint was to determine the complete remission (CR) rate. Secondary endpoints were: CR duration, DFS, OS, safety, and early mortality. Results: 17 pts were enrolled on study so far. The median age was 74 yrs (range, 64-81); the median PS was 1 (0-1). The karyotypes in these pts were: diploid in 6 (35%), complex with chromosome (chr) 5 and/or 7 abnormality (abnl) in 4 (24%), complex without chr 5 and/or 7 abnl in 2 (12%), 11q abnl in 1 (6%), poor metaphases in 1 (6%), and other in 3 (18%). Four pts with prior MDS were treated with a median of 2 prior therapies (1-3). Median bone marrow blast % at the start of therapy was 40 (15-87). The median WBC, hemoglobin, and platelets were 2.1 (0.4–24.8), 8.9 (7.7–10.7), and 45 (14–104), respectively. These pts have received a median of 1 (1-3) cycle of therapy. Of the 11 pts evaluable for response, there were 2(18%) CR, 1(9%) CRp, 1(9%) PR for an ORR of 4/11 (36%). Five pts had no response and were taken off study. Two pts died on study: 1 on day 6 and 1 on day 27. Both pts were 74 yrs with a complex karyotype. One died of pneumonia and multi-organ failure and the 2nd died from cardiac arrest. Other than the deaths, serious adverse events included grade 3 transaminitis in 1 and grade 3 heart failure in 1. Conclusions: OM and LDAC appears to be tolerable in older pts with AML. The combination appears to have activity. Stopping boundaries for futility and safety have not been breached. Enrollment is ongoing.


2012 ◽  
Vol 30 (5_suppl) ◽  
pp. 128-128 ◽  
Author(s):  
Chadi Nabhan ◽  
Anand Patel ◽  
Dana Villines ◽  
Kathy Tolzien ◽  
Susan K. Kelby ◽  
...  

128 Background: LEN has anti-angiogenesis and immunomodulatory properties making it ideal to investigate in CRPC. We report on a phase II study investigating LEN in chemotherapy-naïve CRPC patients (pts) Methods: Eligible pts received LEN at 25 mg daily on days 1 – 21 every 28-days until progression. Daily aspirin or coumadin were required. Responses were assessed every 2 cycles. Toxicity was assessed every cycle. Primary end point: The CB of LEN [Sum of complete response (CR), partial response (PR) and stable disease (SD)]. Secondary end points: Toxicity, time to radiographic and PSA progression (TTP and TTP-PSA), time to next treatment (TTNT), overall survival (OS), and LEN’s impact on quality of life (QOL). Results: 31 pts were enrolled; 27 response-evaluable (1 withdrew consent, 3 off per choice after adverse events). Median age is 74 (range 58-89) with 24 (77%) having Gleason ≥ 7 disease. Median PSA is 66 (2.1-918.6). Six pts (19%) had liver/lung involvement. Fourteen pts (51%) showed biochemical response with 4 (15%) having >50% PSA drop. TTP-PSA is 4 months (2-11). No radiographic responses seen but 17 pts had SD for a median of 4 months (2-16) (CB=55%). Median number of LEN cycles was 3 (2-15). With a median follow-up of 18 months (5-38), 17 patients (55%) remain alive; median OS of 18 months. Grade 3/4 hematologic toxicities were most common (neutropenia 41%, leukopenia 12%, anemia 9%, thrombocytopenia 9%). Other grade 3/4 toxicities: venothromboembolism, atrial fibrillation, and dehydration (6% each). Serious adverse events (SAEs) were witnessed in 10 pts (32%) with only 1 (3%, rash) definitely related to LEN. Others were not related or possibly related. Of 27 pts, 7 (26%) had a dose reduction and 2 (7%) required two dose reductions. Dose reductions occurred after cycle 3. QOL scales suggested no adverse impact. Median TTNT is 2 months (9 pts received chemotherapy, 10 pts went onto studies, 3 pts received hormonal therapies, 4 pts received radiation, 3 pts had no therapy yet, and 2 pts remain on LEN). Conclusions: LEN is active as monotherapy in CRPC. Biochemical responses are witnessed and clinical benefit is observed. Myelosuppression is the most common toxicity.


Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 3930-3930
Author(s):  
Georg Hess ◽  
Ulrich Keller ◽  
Johannes Atta ◽  
Ulrich Bitz ◽  
Christian Lerchenmueller ◽  
...  

Abstract Background: mTOR inhibition has been shown to be effective in various subtypes of malignant lymphomas. In relapsed MCL a phase III trial could prove superiority of Temsirolimus to standard options. Furthermore, in patients with follicular and diffuse large B-cell lymphoma, promising response rates could be observed (Smith et al, JCO 2010). Whereas combination to single agent Rituximab (R) improved efficacy (Ansell et al, Lancet Oncology 2011), there is limited information of the feasibility and efficacy in combination with chemotherapy. Bendamustine (B) has been shown to be effective in various lymphoma entities and has a beneficial side effect profile (Rummel et al, JCO, 2005). In the phase I of this trial, we have established that 50mg of Temsirolimus given 3 times weekly in a four week cycle could be safely added to BR (Hess, Leukemia, 2015). Here we report for the first time combined results of phase I and II of this trial. Methods: this is a multicenter, national, prospective trial. Inclusion criteria: patients were eligible if they had histologically proven FL or MCL, 1-3 prior treatment lines, no curative option available, no refractoriness to Bendamustine, measurable disease, ECOG < 3, sufficient bone marrow reserve, no severe concomitant diseases and given informed consent. Treatment consisted of Bendamustine 90mg/m² day 1-2, Rituximab 375mg/m² day 1 and Temsirolimus 50 mg day 2, 8, 15 of a 28d cycle. A total of 4 cycles was planned with interim staging after 2 cycles. Results: Overall 34 patients (pts) have been included until now (15 pts phase I, 19 pts phase II). Concerning clinical characteristics, median age was 71 years, with 25 MCL and 9FL, and a median number of 2 pretreatments (1-3). Overall the treatment was well tolerated, and toxicity was predominantly hematologic. In 118 evaluable cycles of chemotherapy the following hematologic grade 3 / 4 toxicities were noted: leukopenia (11 pts, 32%), neutropenia (8 pts, 24%), and thrombocytopenia (7 pts, 21%). Non-hematologic grade 3 / 4 observed in at least two patients were angioedema and decrease in blood potassium, infection, metabolic (4 events). AE's of special interest: pulmonary: rate of cough (4; 12%) and pneumonitis (1; 3%); gastrointestinal: diarrhea (6; 18%), nausea (13, 38%); general: fatigue (16; 47%), mucositis (13, 38%); bleeding: epistaxis (4; 12%), which all were predominantly grade 1 or 2. Response: currently, best responses were 8 CR (31%), 16 PR (62%) and 2 SD (8%) in 26 patients evaluable so far. Updated results will be presented at the meeting. Overall responses were 94% in MCL (7 CR, 10 PR, 1 SD) and 88% in FL (1 CR, 6 PR, 1 SD). After a median follow up of 13 months (mean: 21 months) median PFS is 18.6 months for the entire cohort, with 22 months for MCL and not reached in FL. Summary: In this ongoing phase II trial 50mg Temsirolimus (day 1,8,15) in combination with Bendamustine and Rituximab was well tolerated and feasible. A moderate dose of Temsirolimus to standard chemotherapy might be the optimal way to achieve the maximum efficacy with mTOR inhibitors; in fact excellent response rates suggest an additive effect of mTOR inhibition to BR. Even after the BTK inhibitor Ibrutinib has entered the clinical arena of MCL, this combined treatment represents a valuable additional option especially for patients with relapsed MCL Disclosures Hess: Pfizer, Janssen, Roche, Mundipharma: Honoraria, Research Funding; Janssen, Roche, , Celgene, Novartis: Consultancy. Keller:Roche: Consultancy, Honoraria; Pfizer: Consultancy. Witzens-Harig:Roche: Honoraria; Pfizer: Honoraria, Research Funding.


2019 ◽  
Vol 21 (Supplement_6) ◽  
pp. vi184-vi184
Author(s):  
Jacques Grill ◽  
Caroline Brard ◽  
Sue Picton ◽  
Ofelia Cruz ◽  
A Y N Schouten-vanMetteren ◽  
...  

Abstract Chemotherapy is the mainstay of non-surgical treatment in pLGG but many patients progress again after the end of the first treatment. Apart from the standard carboplatin-vincristine, new regimens with less toxicity are therefore desirable. Single agent vinblastine is an established regimen. PDGFRA TKI inhibitors have shown efficacy in refractory pLGG as well. The VINILO phase I showed the feasibility of the combination of vinblastine with nilotinib at the expense of a 50% decrease of the dose of vinblastine. The phase II trial therefore compared vinblastine 6 mg/m2 weekly (standard arm) to vinblastine 3mg/m2 weekly plus nilotinib 230mg/m2/day. The primary endpoint was the PFS, analysed on the intention-to-treat population. The target sample size was 120 patients. Accrual was stopped after recruitment of 109 patients (53 and 56 in the vinblastine-arm and the vinblastine+nilotinib arm, respectively) between July 2016 and April 2019. Fifty-four patients had an optic pathway glioma and 45 had NF1 (these patients were allowed to enter the trial as initial therapy). Half of the patients were treated after more than one line of therapy. The planned interim analysis showed that the vinblastine+nilotinib arm was associated with a worse PFS as compared to the standard arm (HR=2.37; 95%CI, 1.26–4.46; p=0.007; with 2-year PFS of 28% versus 49%). Overall, 156 biological adverse events (AE) of grade ≥ 3 have been reported after randomization (94 in vinblastine alone arm, 62 in vinblastine+nilotinib arm) and 84 non-biological adverse events of grade ≥ 3 (50 in vinblastine alone arm, 34 in vinblastine+nilotinib arm). We conclude that the combination of vinblastine plus nilotinib was less effective than vinblastine alone, possibly because of a lower dose intensity of vinblastine in the experimental arm. Vinblastine can serve as a backbone for combinations but lowering its dose may jeopardize the efficacy.


2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 13001-13001 ◽  
Author(s):  
D. Glenn ◽  
F. Ueland ◽  
A. Bicher ◽  
D. Dizon ◽  
M. Gold ◽  
...  

13001 Background: Pertuzumab (P), a humanized HER2 antibody, represents a new class of targeted agents called HER dimerization inhibitors (HDIs). P inhibits dimerization of HER2 with EGFR, HER3 and HER4, and subsequently inhibits signaling through MAP and PI3 kinases. Single agent P has demonstrated clinical benefit in advanced OC (ASCO 2005 abstract #5051). Methods: 40 pts with platinum-resistant OC (progressed within 6 months of receiving a platinum-based chemotherapy) were enrolled in this 1:1 randomized, double blind, placebo controlled trial of gemcitabine with or without P. Gemcitabine was administered IV on day 1 and 8 at 800 mg/m2 of a 21 day cycle. Blinded placebo or 420 mg P was administered IV on day 1. Gemcitabine was dose reduced for neutropenia or thrombocytopenia. P was not dose reduced. Results: 40 pts have been enrolled and treated with at least 1 cycle of gemcitabine in combination with blinded study drug. The median age was 58.5 (range 18–82); 26 had PS ECOG 0, 13 ECOG 1, 1 ECOG 2. The most common grade 3/4 events were neutropenia in 7 pts (17.5%), thrombocytopenia in 6 pts (15%), small bowel obstruction in 4 pts (10%), constipation in 3 pts (7.5%) and elevated ALT in 3 pts (7.4%). There was one grade 3 diarrhea, but no grade 3 or 4 rash. There were 4 serious adverse events (SAEs) attributed to study drug. These were a pleural effusion, thrombocytopenia, febrile neutropenia, and a deep vein thrombosis. Nine pts required one or two dose reductions of gemcitabine for hematological toxicity. Of 29 pts with post-baseline echo or MUGA values obtained, no pt had LVEF drop to <50%. The adverse events evaluated after 40 pts did not meet the prespecified criteria to call for an independent safety monitoring board evaluation of unblinded data. Conclusions: Preliminary safety data indicate that pertuzumab or placebo combined with gemcitabine is well tolerated with no unexpected additive toxicity. The nature and frequency of the adverse events are similar to what has been observed with either single agent gemcitabine or P. Updated data will be presented at ASCO. [Table: see text]


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