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James Spicer
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MA03 - Clinomics and Genomics (ID 119)
- Event: WCLC 2019
- Type: Mini Oral Session
- Track: Advanced NSCLC
- Presentations: 1
- Now Available
- Moderators:Heather A Wakelee, Wilfried Ernst Erich Eberhardt
- Coordinates: 9/08/2019, 10:30 - 12:00, Colorado Springs (1994)
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MA03.06 - Efficacy Results of Selective AXL Inhibitor Bemcentinib with Pembrolizumab Following Chemotherapy in Patients with NSCLC (Now Available) (ID 2271)
10:30 - 12:00 | Author(s): James Spicer
- Abstract
- Presentation
Background
The RTK AXL is implicated in epithelial-to-mesenchymal transition, negative regulation of anti-tumour immunity and resistance to multiple therapies including immune checkpoint inhibitors.
Bemcentinib (BGB324) is a first-in-class, oral, highly selective and potent AXL inhibitor which has been demonstrated to enhance anti-PD1 therapy.
Method
This phase II trial (Cohort A, NCT03184571) enrolled 48 advanced lung adenocarcinoma patients with progression on or after no more than one prior line of platinum-based chemotherapy. Patients with EGFR/ALK mutations were included in this study and must have progressed on or after at least one standard targeted therapy. The primary endpoint was ORR according to RECIST v1.1. Additional endpoints included efficacy according to biomarker expression, DCR, PFS, OS, and safety. Tumour biopsies were analysed for PD-L1 expression (22C3 pharmDx), AXL by IHC, and infiltrating immune cells.
Result
As of April 2019, the trial was fully recruited: median age 65 (range 39-82) yrs, 61% male, 76% smokers or ex-smokers.
At time of writing, a total of 210 treatment cycles had been completed by all patients. 17 patients were ongoing.
17 of 32 biomarker-evaluable patients (53%) were PD-L1 negative, 13 (41%) had TPS 1-49%, and 2 (6%) had TPS >50%. Of 28 biomarker-evaluable patients, 14 (50%) expressed AXL on their tumours.
Among patients who had at least 1 evaluable on-treatment scan: 5 responses were observed in 13 AXL positive patients (38%), and 7 in 30 patients with TPS 0-49% (23%). There were 10 responses observed among 34 evaluable patients overall (29%).
In Stage 1, two of the 4 AXL positive responses are ongoing; mDoR is not mature in the AXL positive patients. mPFS was 5.9 mo in AXL positive patients (n=10, 3.0-NR) and 4.0 mo (95% CI 1.9-NR) overall (n=24). mOS was not mature.
The most common TRAEs (occurring in >10% of patient in both stages) were transaminase increases (34%), asthenia/fatigue (30%), diarrhoea (26%), nausea (13%), anaemia (11%), decreased appetite (11%), and pruritus (11%). All cases of transaminase increase were reversible and resolved with concomitant administration of systemic corticosteroids and interruption of study treatments.
Conclusion
Patients had predominantly low or no PD-L1 expression; approximately half were AXL positive. The combination of bemcentinib and pembrolizumab was well tolerated and showed promising efficacy in previously treated IO-naïve NSCLC patients, particularly in those with AXL positive disease, including PD-L1 negative patients. Mature ORR for both stages, as well as 12-month OS for stage 1 will be presented at the meeting.
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MA05 - Update on Clinical Trials and Treatments (ID 123)
- Event: WCLC 2019
- Type: Mini Oral Session
- Track: Mesothelioma
- Presentations: 1
- Now Available
- Moderators:Seiki Hasegawa, Enrico Ruffini, Angel Artal
- Coordinates: 9/08/2019, 13:30 - 15:00, Melbourne (1991)
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MA05.08 - Discussant - MA05.05, MA05.06, MA05.07 (Now Available) (ID 3734)
13:30 - 15:00 | Presenting Author(s): James Spicer
- Abstract
- Presentation
Abstract not provided
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MA12 - New Frontiers from Pathology to Genomics (ID 138)
- Event: WCLC 2019
- Type: Mini Oral Session
- Track: Mesothelioma
- Presentations: 1
- Now Available
- Moderators:Prasad S Adusumilli, Francisco Perez Ochoa
- Coordinates: 9/09/2019, 14:00 - 15:30, Melbourne (1991)
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MA12.05 - Genomic Analysis of Long Term Malignant Pleura Mesothelioma Patients Treated with Palliative Chemotherapy (Now Available) (ID 2750)
14:00 - 15:30 | Author(s): James Spicer
- Abstract
- Presentation
Background
Malignant Pleural Mesothelioma (MPM) is an aggressive tumor related to asbestos exposure with a median survival of 9 months from diagnosis. The aim of this study was to evaluate correlation between genetic mutations and survival in patients who received only palliative chemotherapy.
Method
From 2005 to 2015, 720 patients underwent a surgical pleural biopsy and were diagnosed with malignant pleural mesothelioma. Among these, 27 patients survived longer than 30 months (long survival) from diagnosis and 113 survived less than 30 months. The pleural biopsy of the long term survival patients were reviewed and 12 FFPE samples were considered suitable and matched with 12 FFPE biopsy samples from patients who survived less than 12 months.
Result
The DNA of 24 patients was sequenced. One sample did not reach quality to be further considered and was excluded. The mean age of total population was 71.6±8.8 and 15 patients were males (table 1). Eleven patients had a mean overall survival of 5.5 months while 12 patients lived more than 30 months. The mutational analysis identified a total of 428 alterations of which 148, classified as somatic and functional, were further considered. Among these, 85% were missense variants, 8% were variants causing a stop gain, 6% were splice variants. UQCRC1 was significantly associated with a reduced survival of MPM patients (p=0.027); figure 1. Positive trend of correlation was observed between mutations in ACTR1 and CUL1 and short MPM survival. By contrast, no significant correlation was observed between gene mutations and long survival.
Figure 1.
Table 1. patient characteristics.
Variable Long survival
n=12 (%)
Short Survival
n=11 (%)
P value Age (median) 67 72 0.216 Sex 0.193 Female 6 (50) 2 (18.2) Male 6 (50) 9 (81.8) Side 0.684 Right 7 (58.3) 5 (45.5) Left 5 (41.7) 6 (54.5)
Conclusion
This is the first study that focusing on MPM patients not suitable for multimodality treatment investigated differences in mutational profile between short and long survivors. Our results suggest a possible role of mitochondria metabolism in mesothelioma aggressiveness.
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P1.01 - Advanced NSCLC (ID 158)
- Event: WCLC 2019
- Type: Poster Viewing in the Exhibit Hall
- Track: Advanced NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 9/08/2019, 09:45 - 18:00, Exhibit Hall
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P1.01-72 - A Phase II Study of Selective AXL Inhibitor Bemcentinib and Pembrolizumab in Patients with NSCLC Refractory to Anti-PD(L)1 (ID 1632)
09:45 - 18:00 | Author(s): James Spicer
- Abstract
Background
The RTK AXL is implicated in epithelial-to-mesenchymal transition, negative regulation of anti-tumour immunity and resistance to multiple therapies including immune checkpoint inhibitors.
Bemcentinib (BGB324) is a first-in-class, oral, highly selective and potent AXL inhibitor which has been demonstrated to enhance anti-PD1 therapy.
The combination of bemcentinib and pembrolizumab was well tolerated and showed promising efficacy in previously treated IO-naïve NSCLC patients (Cohort A, NCT03184571), particularly in those with AXL positive disease, including PD-L1 negative patients.
The novel combination is now being assessed in patients refractory to anti-PD-(L)1 therapy, considering the emerging need in this population and AXL’s role as a mediator of resistance.
Method
This is an open-label, single-arm, 2-stage phase II study (Cohort B, NCT03184571) to evaluate the safety and efficacy of bemcentinib (200mg/d) in combination with pembrolizumab (200mg/q3wk) in patients post anti-PD-(L)1 therapy. The primary endpoint is overall response rate (ORR), and additional endpoints include efficacy by biomarker expression, duration of response (DoR), disease control rate (DCR), progression free survival (PFS), overall survival (OS), and safety. Clinical efficacy endpoints are based on tumour imaging evaluable by RECIST v1.1.
Eligible patients received a maximum of 2 prior lines of therapy, with the most recent course having included a PD-(L)1 inhibitor. To be eligible, patients must have exhibited disease control (CR/PR/SD) for at least 6 months on prior PD-(L)1 inhibitor therapy with disease progression occurring within 12 weeks since last dose.
Bemcentinib will be administered as a loading dose of 400mg on days 1, 2 and 3 followed by a dose of 200mg once daily. A fixed dose of 200 mg pembrolizumab will be given by intravenous infusion over 30 minutes every 3 weeks. Bemcentinib and pembrolizumab will be given until disease progression, unacceptable dose toxicity, or for a maximum of 35 cycles.
Tumour specimens will be analysed for PD-L1 expression (22C3 pharmDx), AXL by IHC, and infiltrating immune cells.
The pre-specified efficacy threshold for continuation into the second stage is 1 objective response among the first 13 patients, at which point up to a further 16 patients may be evaluated, for a total of 29 patients.
Result
Section not applicable
Conclusion
Section not applicable
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P2.01 - Advanced NSCLC (ID 159)
- Event: WCLC 2019
- Type: Poster Viewing in the Exhibit Hall
- Track: Advanced NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 9/09/2019, 10:15 - 18:15, Exhibit Hall
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P2.01-12 - A Phase I/II Trial of IO102 and Pembrolizumab With/Without Chemotherapy as First-line Treatment of Metastatic NSCLC (ID 706)
10:15 - 18:15 | Author(s): James Spicer
- Abstract
Background
Immunotherapy has significantly changed the treatment landscape of non-small cell lung cancer (NSCLC) with no driver mutations. However, despite the addition of anti-PD-1/PD-L1 therapies to the clinical armamentarium only a subset of patients derives durable benefit. IO102 is a novel, second generation, HLA-A unrestricted immune modulating T-win® vaccine targeting IDO. IO102 has a dual mode of action; remodulation of the tumour micro-environment through elimination of immune suppressive cells, and induction of CD8 T-cell mediated killing of IDO-expressing tumor cells. Our first-generation IDO vaccine (IO101) has shown promising antitumor activity and a favorable safety in heavily pretreated NSCLC patients (Iversen, CCR 2013).
Method
Phase I/II, international, multicenter, open-label, randomized trial with two parallel cohorts. Cohort A: IO102 (100µg s.c.) and pembrolizumab (200 mg) (PD-L1 ≥ 50%); Cohort B: IO102, pembrolizumab and carboplatin plus pemetrexed (PD-L1 < 50%). The maximum treatment duration is 35 cycles (app. 2 years). Key eligibility criteria include metastatic NSCLC or non-squamous NSCLC (cohort B) with no prior treatment for metastatic NSCLC and no driver mutations.
Phase I is a non-randomized safety run-in with 6 patients per cohort investigating one dose level of the experimental arms. Only one DLT is allowed in each cohort. Phase II is following Sargent’s two-stage, three-outcome optimum design (Sargent, ClinTrial2001) with a 2:1 randomization in the cohorts. Cohort A: IO102 and pembrolizumab versus pembrolizumab alone; Cohort B: IO102, pembrolizumab and chemotherapy vs. pembrolizumab and chemotherapy. Provision of blood and tumour tissue is required for biomarker studies.
The primary endpoint is safety and objective response rate (ORR) per RECIST 1.1 in Phases I and II, respectively. Secondary endpoints include ORR per iRECIST, duration of response, progression free survival, overall survival, and biomarkers including immunoscore in tissue, tumour mutational burden and immunomonitoring in blood.
The study is enrolling in Europe. First patient was entered in September 2018 and recruitment is expected to continue throughout 2019: EudraCT Number 2018-000139-28 / IND Number: 018081.
Result
Section not applicable
Conclusion
Section not applicable
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P2.06 - Mesothelioma (ID 170)
- Event: WCLC 2019
- Type: Poster Viewing in the Exhibit Hall
- Track: Mesothelioma
- Presentations: 1
- Moderators:
- Coordinates: 9/09/2019, 10:15 - 18:15, Exhibit Hall
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P2.06-07 - Phase 1 Study of CA-170: First-in-Class Small Molecule Targeting VISTA/PD-L1 in Patients with Malignant Pleural Mesothelioma (ID 2341)
10:15 - 18:15 | Author(s): James Spicer
- Abstract
Background
In contrast to PD-L1, VISTA is expressed in up to 90% of malignant pleural mesothelioma (MPM) patients with strong expression on infiltrating lymphocytes and on mesothelioma cells. Recent work also found that expression of VISTA in epithelioid MPM is strikingly higher than in other solid tumors. PD-1 and PD-L1 immune checkpoint inhibitors (ICI) have shown modest activity in ≥2nd line MPM which has fueled interest in novel targets, such as VISTA. Many genes associated with VISTA signaling are proliferative and may help drive cancer, providing strong rationale for inhibitors blocking VISTA. VISTA and PD-1 are independent immune checkpoints negatively regulating T-cell function. VISTA is expressed on immune and tumor cells and implicated in resistance to ICI. Preclinical studies show that dual blockade of VISTA and PD-L1 can be synergistic. CA-170, a small molecule inhibitor of VISTA and PD-L1, has demonstrated anti-tumor activity in multiple in vivo models including syngeneic models that do not respond to anti-PD-1 treatment. Phase 1/2 trialsof CA-170 monotherapy showed that CA-170 has a favorable safety profile with preliminary signs of anti-tumor activity in PD-1 malignancies. Pharmacological activity, as measured by immune-modulating effects, was observed across a wide dose range. Development of CA-170 is on-going with evaluation of BID doses in VISTA expressing tumors, such as MPM.
Method
CA-170-101 is a Phase 1 dose finding study in advanced solid tumors and lymphomas. Selected dose levels can be expanded with additional patients in tumor types of interest. Two pharmacologically active doses, 200 and 1200 mg BID, were selected to further expand with MPM patients to better understand CA-170 activity in this high VISTA-expressing tumor type. As of April 2019, 12 patients with MPM have been enrolled; 8 have completed the 21-day safety evaluation period without DLT. Objectives: tolerability and RP2D (primary), anti-tumor activity (PFS and ORR, secondary) and exploratory biomarkers and PD effects. Key eligibility: histologically confirmed epithelioid, ≥1 prior therapy including pemetrexed-platinum doublet, no prior ICI, measurable disease, paired tumor biopsies if medically feasible, ECOG 0-1, life expectancy >3 months, and adequate organ function. Clinical trial: NCT02812875.
Result
Section not applicable
Conclusion
Section not applicable
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PL02 - Presidential Symposium including Top 7 Rated Abstracts (ID 89)
- Event: WCLC 2019
- Type: Plenary Session
- Track:
- Presentations: 1
- Moderators:Giorgio Vittorio Scagliotti, Ramon Rami-Porta
- Coordinates: 9/09/2019, 08:00 - 10:15, Barcelona (2005)
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PL02.09 - National Lung Matrix Trial (NLMT): First Results from an Umbrella Phase II Trial in Advanced Non-Small Cell Lung Cancer (NSCLC) (ID 2282)
08:00 - 10:15 | Author(s): James Spicer
- Abstract
Background
Oncogene-addicted NSCLC can achieve substantial clinical benefit with single-agent targeted therapy. Seeking to extend this paradigm to other more genetically complex NSCLC, we report first results of NLMT, an umbrella phase II trial whereby a bespoke next-generation sequencing screening panel (Stratified Medicine Programme 2) stratifies NSCLC patients to rationally selected targeted therapies. Uniquely we present results across the entirety of the platform to enable an assessment of the potential to further stratify medicine in advanced NSCLC. Novel methodology is used to ensure that the integrity of this ongoing platform trial is not jeopardised.
Method
NLMT uses a Bayesian adaptive design to screen currently 8 targeted drugs for signals of activity in 22 molecularly defined cohorts. For single agents, pre-specified clinically relevant outcomes are either median progression-free survival (mPFS) >3 months or objective response rate (ORR) and/or durable clinical benefit rate at 24 weeks (DCBR) >30%. Target recruitment for each cohort is 30 with futility analyses at 15. Recruitment continues in 19 cohorts. We report posterior probabilities (PP) of a clinically relevant outcome for closed cohorts and Bayesian predictive probability of success (PPoS) given observed data for open cohorts. This novel approach provides insight into the drug-biomarker combinations that have the strongest potential for further research.
Result
Over a 4 year period to end of March 2019, NLMT has recruited 286 patients from >4000 screened. Of 6 palbociclib cohorts (all proficient Rb): mPFS in KRAS mutation (n=30) is 5.8 months (PP>0.99); CDKN2A loss/non-squamous (n=27) passed its interim analysis; we predict >75% PPoS, given current data, in CDKN2A loss/squamous (n=16) and CCND1 amplification (n=13). Data for crizotinib show >90% PPoS in ROS1 gene fusions (n=8) and MET exon 14 skipping mutation (n=8), with less clear signal for MET amplification (n=9). Responses to selumetinib/docetaxel in NF1 mutation (n=16) warrant continuation. Recruitment to vistusertib was halted at interim for LKB1 single mutation (ORR=0/15, PP=0.003; DCBR=1/15, PP=0.026), but DCBR in LKB1/KRAS double mutation (n=23) warrant continuation. 4 cohorts receive capivasertib (n=22): data in PIK3CA amplifications (n=9) indicate <15% PPoS.
Conclusion
These first results from the largest stratified medicine dataset in NSCLC indicate further molecular stratifications could benefit from targeted therapies. Reporting interim outputs for all cohorts will allow reappraisal of the global stratified medicine strategy in cancer.
