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D. Morgensztern
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MA 02 - Emerging Targets (ID 656)
- Event: WCLC 2017
- Type: Mini Oral
- Track: Clinical Design, Statistics and Clinical Trials
- Presentations: 1
- Moderators:Ravi Salgia, Shun Lu
- Coordinates: 10/16/2017, 11:00 - 12:30, Room 511 + 512
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MA 02.10 - Phase I Study of ABBV-399 (Telisotuzumab Vedotin) as Monotherapy and in Combination with Erlotinib in NSCLC (ID 9466)
12:05 - 12:10 | Author(s): D. Morgensztern
- Abstract
- Presentation
Background:
The c-Met receptor is overexpressed in ~50% of patients (pts) with non-small cell lung cancer (NSCLC). ABBV-399 is a first-in-class antibody-drug conjugate composed of ABT-700, an anti–c-Met antibody, conjugated to monomethyl auristatin E (a microtubule inhibitor). Preclinical data demonstrate that ABBV-399 can deliver a potent cytotoxin directly to c-Met+ tumor cells.
Method:
ABBV-399 was administered at doses ranging from 2.4 to 3.0 mg/kg (dose expansion and combination cohorts at 2.7 mg/kg) once every 21 days to 29 pts with advanced c-Met+ (immunohistochemistry [IHC] H-score ≥150) NSCLC both as monotherapy (ABBV-399/monotherapy; 16 pts) and in combination with oral erlotinib 150 mg daily (ABBV-399/ERL; 13 pts) (NCT02099058). c-Met expression was assessed by IHC utilizing the SP44 antibody (Ventana; Tucson, AZ, USA).
Result:
As of April 26, 2017, 16 pts with c-Met+ NSCLC received ≥1 dose of ABBV-399/monotherapy. Monotherapy treatment-related adverse events (TRAEs) occurring in ≥10% of pts (all dose levels and all grades) were fatigue (43.8%), nausea (37.5%), neuropathy (25.0%), vomiting (18.8%), anemia, constipation, and diarrhea (12.5% each). Three of 16 (19%) ABBV-399–treated c-Met+ NSCLC pts had a confirmed partial response (PR) with duration of response (DOR) 3.1, 4.8, and 11.1 months. At week 12, 9 of 16 pts (56.3%) had disease control. TRAEs in ABBV-399/ERL occurring in ≥10% of pts (all grades) were neuropathy (46.2%), nausea (23.1%), fatigue, acneiform rash, dry skin, and diarrhea (15.4% each). Four of 13 (31%) evaluable ABBV-399/ERL–treated c-Met+ pts had a PR (3 confirmed, 1 unconfirmed) with DOR 2.8, 5.3, 4.2+, and 9.1+ months. Three of the 4 pts with PR had EGFR-mutated tumor and recently progressed on TKI. At week 12, 10 of 13 pts (76.9%) had disease control. There were no treatment-related deaths as monotherapy or in combination with erlotinib. Responses were seen in both squamous and non-squamous histology.
Conclusion:
ABBV-399 is well tolerated at 2.7 mg/kg once every 21 days and has demonstrated antitumor activity in pts with c-Met+ NSCLC both as monotherapy and in combination with erlotinib. Early evidence suggests that ABBV-399 represents a novel treatment paradigm effective against multiple c-Met+ NSCLC molecular subtypes and histologies. Updated efficacy/safety data and c-Met IHC status will be presented. Safety and efficacy data from Q2week dosing of ABBV-399 will also be presented.
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MA 03 - Chemotherapy (ID 651)
- Event: WCLC 2017
- Type: Mini Oral
- Track: Advanced NSCLC
- Presentations: 1
- Moderators:Jin-Hyoung Kang, W. Su
- Coordinates: 10/16/2017, 11:00 - 12:30, Room 502
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MA 03.01 - Nab-Paclitaxel ± CC-486 as Second-Line Treatment of Advanced NSCLC: Results from the ABOUND.2L+ Study (ID 8676)
11:00 - 11:05 | Author(s): D. Morgensztern
- Abstract
- Presentation
Background:
CC-486 (oral azacitidine) is an epigenetic modifier with potential effect as a priming agent for chemotherapy in patients with NSCLC. Outcomes of nab-paclitaxel+CC-486 vs nab-paclitaxel as second-line treatment of advanced NSCLC are reported.
Method:
Patients with advanced nonsquamous NSCLC and no more than 1 prior chemotherapy line (including platinum doublet combination) were randomized (1:1) to nab-paclitaxel 100 mg/m[2] d8, 15 + CC-486 200 mg qd d1-14 or nab-paclitaxel 100 mg/m[2] d1, 8, both administered q3w until progressive disease/unacceptable toxicity. Primary endpoint was PFS. Secondary endpoints: DCR, ORR, OS, and safety. QoL, an exploratory endpoint, was assessed on d1 of each cycle.
Result:
The nab-paclitaxel+CC-486 arm was discontinued in October 2016 due to demonstrated futility vs nab-paclitaxel monotherapy upon completion of a protocol-specified interim analysis. Overall, 161 patients were randomized (nab-paclitaxel+CC-486, 81; nab-paclitaxel, 80). Baseline characteristics were balanced between arms. The median number of cycles was 4 for each arm, and the median nab-paclitaxel cumulative dose was 600 mg/m[2] and 800 mg/m[2] in the nab-paclitaxel+CC-486 and nab-paclitaxel arms, respectively. Rates of grade 3/4 (G3/4) treatment-emergent AEs were 59.5% and 54.4% for the combination and monotherapy arms, respectively. The most frequent hematologic G3/4 AEs were neutropenia (16.5% vs 10.1%) and anemia (1.3% vs 7.6%). G3/4 peripheral neuropathy was reported in 2.5% and 7.6% of patients, respectively. The addition of CC-486 to nab-paclitaxel did not improve ORR, DCR, PFS, or OS (Table). When assessed by Lung Cancer Symptom Scale, nab-paclitaxel monotherapy was associated with improvement in the global QoL, average symptom burden index, and lung cancer symptoms except for hemoptysis.
Conclusion:
The addition of CC-486 to nab-paclitaxel did not clinically benefit patients with previously treated NSCLC. However, single-agent nab-paclitaxel appears to be a promising therapy based on safety, efficacy, and QoL data. Updated efficacy and safety data will be presented. NCT02250326nab-Paclitaxel + CC-486 n = 81 nab-Paclitaxel n = 80 Median PFS, months 3.2 4.2 HR (95% CI) 1.3 (0.9 - 2.0) 1-year PFS, % 4.1 18.3 Median OS, months 8.4 12.7 HR (95% CI) 1.4 (0.88 - 2.31) 1-year OS, % 39.2 54.3 ORR, n (%)[a] 11 (13.6) 11 (13.8) Response rate ratio (95% CI) 0.99 (0.45 - 2.15) CR PR SD PD DCR (≥ SD) 0 11 (13.6) 41 (50.6) 22 (27.2) 52 (64.2) 0 11 (13.8) 43 (53.8) 19 (23.8) 54 (67.5) CR, complete response; DCR, disease control rate; HR, hazard ratio; ORR, overall response rate; OS, overall survival; PD, progressive disease; PFS, progression-free survival; PR, partial response; SD, stable disease. [a] Response rate was based on the intent-to-treat population; however, 14 patients did not have a response assessment.
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MA 10 - Immunotherapy I (ID 664)
- Event: WCLC 2017
- Type: Mini Oral
- Track: Immunology and Immunotherapy
- Presentations: 1
- Moderators:S. Wang, Robert Pirker
- Coordinates: 10/17/2017, 11:00 - 12:30, Room 303 + 304
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MA 10.02 - Nab-Paclitaxel + Durvalumab as Second- or Third-Line Treatment of Advanced NSCLC: Results from ABOUND.2L+ (ID 8682)
11:05 - 11:10 | Author(s): D. Morgensztern
- Abstract
- Presentation
Background:
Chemotherapy may enhance immunotherapeutic effects by causing tumor antigen release, which primes the immune system to kill tumor cells. Early clinical data on nab-paclitaxel + carboplatin in combination with immune checkpoint inhibitors (ICI) demonstrated promising activity without compounding toxicities in patients with non-small cell lung cancer (NSCLC). ABOUND.2L+ evaluated nab-paclitaxel–based regimens in previously treated patients with advanced NSCLC. Here we report the efficacy and safety of nab-paclitaxel + durvalumab as second/third-line treatment.
Method:
Patients with advanced NSCLC were assigned to receive second/third-line (immunotherapy allowed in prior line, including platinum doublet combination) nab-paclitaxel 100 mg/m[2] on days 1 and 8 + durvalumab 1125 mg on day 15, in 21-day cycles, administered until unacceptable toxicity/progression per immune-related RECIST v1.1. Primary endpoint is progression-free survival (PFS). Secondary endpoints are overall survival (OS), overall response rate (ORR), disease control rate (DCR), and safety.
Result:
Seventy-nine patients were enrolled. Median age was 63 years, 68% of patients were male, 23% had Eastern Cooperative Oncology Group performance status of 0, and 70% had nonsquamous NSCLC; 11% of patients received prior ICIs. Median PFS (Table) and OS were 4.5 (3.4-5.8) months and NE (7.3-NE). ORR was 27% (1 complete response) and DCR was 71%. Grade 3/4 treatment-emergent adverse events of special interest occurring in ≥ 5% of patients included neutropenia (6%) and dyspnea (5%); grade 3/4 peripheral neuropathy and anemia each occurred in 4% of patients. Median treatment duration was 24 weeks; median number of treatment cycles was 7. For nab-paclitaxel and durvalumab, median dose intensities were 59.05 mg/m[2]/week and 326.61 mg/week, respectively; median percentages of per-protocol dose were 88.58% and 87.10%.
Conclusion:
The combination of durvalumab with nab-paclitaxel demonstrated antitumor activity with manageable toxicity in the second/third-line setting. Further details will be presented. NCT02250326Nab-P Durva Median PFS (range), months Overall (n = 79) 4.5 (3.4-5.8) ICI pretreated (n = 9)[a] ICI naive (n = 69)[a] 6.9 (1.4-NE) 4.4 (3.0-5.7) Squamous (n = 23)[a] Nonsquamous (n = 55)[a] 5.9 (3.0-7.8) 4.2 (2.9-5.7) ICI, immune checkpoint inhibitor; NE, not estimable; PFS, progression-free survival. [a] Data pending for 1 patient.
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