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341 First Multicenter, Randomized Phase 3 Study in Patients (Pts) with Relapsed/Refractory (R/R) Peripheral T-Cell Lymphoma (PTCL): Alisertib (MLN8237) Versus Investigator's Choice (Lumiere trial; NCT01482962)

Lymphoma: Chemotherapy, excluding Pre-Clinical Models
Program: Oral and Poster Abstracts
Type: Oral
Session: 623. Lymphoma: Chemotherapy, excluding Pre-Clinical Models: Aggressive NHL – MCL, Burkitt, T-cell
Sunday, December 6, 2015: 5:30 PM
Hall E2, Level 2 (Orange County Convention Center)

Owen A. O'Connor, MD, PhD1*, Muhit Özcan, MD2*, Eric D. Jacobsen, MD3, Josep Maria Roncero Vidal, MD4*, Judith Trotman, MBChB5, Judit Demeter, MD, PhD, DsC6*, Tamás Masszi, MD7*, Juliana Pereira, MD, PhD8*, Radhakrishnan Ramchandren, MD9*, Francesco A. d'Amore, MD, PhD10*, Francine Foss, MD11, Won-Seog Kim, MD, PhD12*, John P. Leonard, MD13, Carlos Sérgio Chiattone, MD, PhD14, Pier Luigi Zinzani, MD, PhD15, Hua Liu, PhD16*, JungAh Jung, PhD16*, Xiaofei Zhou, PhD17*, E. Jane Leonard, MSc18*, Claudio Dansky Ullmann, MD18* and Andrei R. Shustov, MD19

1Medicine, Center for Lymphoid Malignancies, Columbia University Medical Center, New York Presbyterian Hospital, New York, NY
2Department of Hematology & BMT, Ankara University Medical School, Cebeci Hospital, Dikimevi, Ankara, Turkey
3Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
4Clinical Hematology, Catalan Institute of Oncology, Girona, France
5Department of Hematology, Concord Repatriation General Hospital, Concord, NSW, Australia
6First Department of Internal Medicine, Division of Haematology, Semmelweis University, Budapest, Hungary
7Department of Haematology and Stem Cell Transplantation, St. Istvan and St. Laszlo Hospital, Budapest, Hungary
8Department of Hematology, University of São Paulo Medical School, São Paulo, Brazil
9Hematology/Oncology, Karmanos Cancer Institute, Detroit, MI
10Hematology, Aarhus University Hospital, Bethesda, MD
11Yale Hematology/Cutaneous Lymphoma, Smilow Cancer Hospital at Yale-New Haven, New Haven, CT
12Department of Hematology-Oncology, Samsung Medical Center, Seoul, South Korea
13Weill Cornell Medical College, New York, NY
14Department of Hematology and Oncology, Santa Casa Medical School, Sao Paulo, Brazil
15Institute of Hematology “L. e A. Seràgnoli”, University of Bologna, Bologna, Italy
16Biostatistics, Millennium Pharmaceuticals, Inc., Cambridge, MA, USA, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, Cambridge, MA
17Clinical Pharmacology, Millennium Pharmaceuticals Inc., Cambridge, MA, USA, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, Cambridge, MA
18Oncology Clinical Research, Millennium Pharmaceuticals, Inc., Cambridge, MA, USA, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, Cambridge, MA
19University of Washington Medical Center – Seattle Cancer Care Alliance & Fred Hutchinson Cancer Research Center, Seattle, WA

Background PTCL is an aggressive subgroup of NHL. Outcomes in R/R PTCL remain poor and alternative therapies are needed.  Alisertib is an investigational, oral, selective inhibitor of Aurora A kinase, a key mitotic regulator that is overexpressed/amplified in various cancers, including lymphomas. Phase 2 data with single-agent alisertib in R/R NHL (Friedberg et al JCO 2014) and R/R PTCL (Barr et al JCO 2015) suggested promising antitumor activity. This international phase 3 trial evaluated single-agent alisertib vs investigator's choice in pts with R/R PTCL, and was the first initiated randomized trial in this setting.

Methods Adult pts with R/R PTCL (WHO criteria) after ≥1 prior conventional systemic cytotoxic therapy, who had measurable disease by 2007 IWG criteria, tumor biopsy for central hematopathology review, and ECOG PS 0–2, were eligible. Pts were randomized 1:1 (stratified by nodal vs extranodal disease, IPI score [0/1/2 vs 3/4/5], and region [North America + EU vs Rest of World]) to receive alisertib 50 mg twice daily as an enteric coated tablet on d 1–7 in 21-d cycles (alisertib arm), or investigator's choice of: pralatrexate 30 mg/m2 IV once weekly for 6 weeks in 7-week cycles; romidepsin 14 mg/m2 IV on d 1, 8, and 15 in 28-d cycles; or gemcitabine 1000 mg/m2 IV on d 1, 8, and 15 in 28-d cycles (comparator arm), until disease progression, unacceptable toxicity, or 2 yrs (extendable if benefit shown). Selected comparator drug could not have been previously received by the pt, and crossover to another study drug was not permitted. The primary endpoints were ORR (CR+PR) and PFS by IWG criteria per central (IRC) assessment. Secondary endpoints included OS, CR rate, DOR, and safety. The study employed an adaptive sample size reassessment approach, with two interim analyses (IA1, futility analysis; IA2) plus a planned final analysis. Sample size was determined to give 80% power to detect a difference in ORR (assumed 55% alisertib vs 30% comparator) at IA2, and ~85% power to detect a reduction in HR for PFS in favor of alisertib at the final analysis with a maximum of 354 randomized pts and a maximum of 261 PFS events. Conditional power calculation based on PFS at IA2 could determine whether the study would be stopped for futility or if sample size would be expanded for the final analysis. Here we report data from IA2 (17Sep2014 data cut-off).

Results 238 pts were randomized across 27 countries (120 alisertib, 118 comparator). Baseline characteristics were balanced between arms (alisertib vs comparator): median age 63 vs 64 yrs; male 68% vs 64%; Ann Arbor stage III/IV 74% vs 72%; bone marrow involvement at study entry 29% vs 35%. Efficacy data are shown in the Table. ORR by IRC with alisertib vs comparator was 33% vs 43% (OR 0.65 [95% CI: 0.34–1.23]), including 16% vs 25% CR. Median duration of follow-up was 9.5 vs 9.2 mos with alisertib vs comparator. Median PFS by IRC was 3.7 vs 3.4 mos (HR 0.939 [95% CI: 0.681–1.293]; Figure) and median OS was 9.9 vs 12.2 mos (HR 0.901 [95% CI: 0.607–1.337]; OS data not mature at current follow-up). Median treatment duration with alisertib vs comparator was 12 vs 10 weeks and 15% vs 5% of pts remained on treatment at data cut-off. With alisertib vs comparator, rates of Gr ≥3 AEs were 85% vs 81%, serious AEs 53% vs 55%, discontinuations due to AEs 9% vs 13%, and on-study treatment-related deaths 2% vs 2%. Gr ≥3 AEs (>20% all pts) were neutropenia 44% vs 27%, thrombocytopenia 29% vs 27%, and anemia 30% vs 11%.

Conclusion While alisertib showed activity in R/R PTCL, there was no significant efficacy benefit vs comparator. Based on IA2, there was a low probability of claiming superiority of alisertib for PFS at the final analysis; therefore, per IDMC recommendation enrollment was stopped at 271 pts and pts deriving benefit continue on treatment. The study was unblinded and final data are pending.

 

Table. Efficacy

 

Alisertib

Comparator

All

Pralatrexate

Romidepsin

Gemcitabine

Response, n (%)*†

n=83

n=80

n=40

n=17

n=23

ORR (CR+PR)

27 ( 33)

34 (43)

16 (40)

10 (59)

8 (35)

    CR

13 (16)

20 (25)

10 (25)

5 (29)

5 (22)

    PR

14 (17)

14 (18)

6 (15)

5 (29)

3 (13)

SD

26 (31)

18 (23)

13 (33)

2 (12)

3 (13)

PD

30 (36)

27 (34)

11 (28)

4 (24)

12 (52)

Median DOR*† (responders), mos

5.0

5.8

PFS*‡

n=120

n=118

n=67

n=21

n=30

Events, n (%)

78 (65)

73 (62)

45 (67)

7 (33)

21 (70)

Median, mos

3.7

3.4

3.4

8.0

1.9

*IRC assessment

†Response-evaluable pts (n=163); n=75 not evaluable (not dosed/ no post-baseline IRC assessment/ no central confirmation of PTCL)

‡ITT analysis (n=238)

 

 

Disclosures: O'Connor: Spectrum: Research Funding ; Seattle Genetics: Research Funding ; Takeda Pharmaceutical Company Limited: Research Funding . Off Label Use: Investigational Aurora A kinase inhibitor, alisertib, for patients with relapsed/refractory peripheral T-cell lymphoma.. Demeter: Amgen: Membership on an entity’s Board of Directors or advisory committees ; Novartis: Membership on an entity’s Board of Directors or advisory committees ; Roche: Membership on an entity’s Board of Directors or advisory committees ; BMS: Membership on an entity’s Board of Directors or advisory committees . Masszi: BMS: Membership on an entity’s Board of Directors or advisory committees ; Novartis: Membership on an entity’s Board of Directors or advisory committees ; Janssen-Cilag: Membership on an entity’s Board of Directors or advisory committees ; Takeda: Membership on an entity’s Board of Directors or advisory committees . Ramchandren: Kite Pharma: Membership on an entity’s Board of Directors or advisory committees , Speakers Bureau ; Seattle Genetics: Membership on an entity’s Board of Directors or advisory committees , Research Funding , Speakers Bureau ; Pharmacyclics: Research Funding . d'Amore: Takeda Pharmaceutical Company Limited: Honoraria , Membership on an entity’s Board of Directors or advisory committees , Research Funding , Speakers Bureau . Kim: Merck: Research Funding ; Takeda: Research Funding ; Novartis: Research Funding ; Kyowa-Kirin: Research Funding ; Donga: Research Funding ; Roche: Research Funding . Zinzani: J&J: Membership on an entity’s Board of Directors or advisory committees , Speakers Bureau ; Pfizer: Membership on an entity’s Board of Directors or advisory committees , Speakers Bureau ; Gilead: Membership on an entity’s Board of Directors or advisory committees , Speakers Bureau ; Celgene: Membership on an entity’s Board of Directors or advisory committees , Speakers Bureau ; Takeda: Membership on an entity’s Board of Directors or advisory committees , Speakers Bureau . Liu: Millennium Pharmaceuticals Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited: Employment . Jung: Millennium Pharmaceuticals Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited: Employment . Zhou: Millennium Pharmaceuticals Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited: Employment . Leonard: Millennium Pharmaceuticals Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited: Employment . Dansky Ullmann: Millennium Pharmaceuticals Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited: Employment .

*signifies non-member of ASH