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Ramaswamy Govindan



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    EXH03 - Inivata Exhibit Showcase Session - Liquid Biopsy: Providing Accurate Insights for Advanced NSCLC Patients - A Closer Look at the Validation and Utility of the InVision First - Lung Test (Not IASLC CME Accredited) (ID 1002)

    • Event: WCLC 2018
    • Type: Exhibit Showcase
    • Track:
    • Presentations: 1
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      EXH03.01 - Liquid Biopsy - Providing Accurate Insights for Advanced NSCLC Patients - A Closer Look at the Validation and Utility of the InVision FirstTM - Lung Test (ID 14775)

      17:00 - 17:30  |  Presenting Author(s): Ramaswamy Govindan

      • Abstract
      • Slides

      Abstract not provided

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    MA16 - Novel Mechanisms for Molecular Profiling (ID 917)

    • Event: WCLC 2018
    • Type: Mini Oral Abstract Session
    • Track: Advanced NSCLC
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/25/2018, 13:30 - 15:00, Room 203 BD
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      MA16.02 - Prospective Clinical Validation of the InVisionFirst™ ctDNA Assay for Molecular Profiling of Patients with Advanced NSCLC (ID 13885)

      13:35 - 13:40  |  Presenting Author(s): Ramaswamy Govindan

      • Abstract
      • Presentation
      • Slides

      Background

      Clinical practice guidelines advocate molecular profiling as a part of the evaluation of advanced NSCLC, with ctDNA based profiling being an option for those with insufficient tissue. Thorough prospective clinical validation studies of NGS based ctDNA assays are lacking. Here we report the multi-centered prospective clinical validation of a ctDNA NGS panel for stratification of patients with advanced untreated NSCLC.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      InVisionFirst™ (Inivata) is a ctDNA NGS assay for detection of genomic alterations in 36 genes commonly mutated in NSCLC and other cancers. 264 patients with untreated advanced NSCLC were prospectively recruited by 41 US centers. 178 patients had tumour tissue available for molecular profiling (predominantly by NGS) and the remaining 86 patients without tissue were included to compare ctDNA profiles obtained from patients with and without tissue for profiling.

      4c3880bb027f159e801041b1021e88e8 Result

      A total of 204 patients (77.3%) had detectable ctDNA alterations. Using tissue results as the reference, overall concordance for the full 36 genes in the InVisionFirst™ panel with matched tissue profiling was 97.8% with 82.9% PPV, 98.5% NPV, 70.6% sensitivity and 99.2% specificity. Considering a subgroup of 8 genes that can influence routine clinical patient management (EGFR, ALK, ROS1, ERBB2, MET, BRAF, KRAS, STK11) the PPV was 93.7%, 96.8% NPV, 72.4% sensitivity and 99.4% specificity. Excluding patients with undetectable ctDNA, these figures become 93.7% PPV, 98.4% NPV, 87.3% sensitivity and 99.3% specificity. The observed pattern of genomic changes seen in ctDNA was consistent across patients with and without tissue for profiling. Across the whole study, 44 patients with actionable alterations were identified by ctDNA testing compared to only 36 by tissue testing. 47% of patients tested by ctDNA had an actionable alteration or an alteration that is generally mutually exclusive for such actionable changes such as KRAS or STK11.

      8eea62084ca7e541d918e823422bd82e Conclusion

      The InVisionFirst™ assay demonstrates excellent concordance with tissue profiling in this multi-centered prospective clinical validation study. The performance of this assay in terms of overall sensitivity and specificity appears comparable if not higher than other established commercial ctDNA assays. Utilization of InVisionFirst™ ctDNA testing led to the detection of 22% more actionable alterations than standard of care tissue testing in this study supporting its use for the molecular stratification of patients with advanced NSCLC. Further analyses on the features associated with detectable ctDNA signatures are ongoing.

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    MTE13 - Clonal Evolution and Targeted Therapy (Ticketed Session) (ID 823)

    • Event: WCLC 2018
    • Type: Meet the Expert Session
    • Track: Targeted Therapy
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/25/2018, 07:00 - 08:00, Room 201 BD
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      MTE13.01 - Clonal Evolution and Targeted Therapy (ID 11568)

      07:00 - 07:30  |  Presenting Author(s): Ramaswamy Govindan

      • Abstract
      • Presentation
      • Slides

      Abstract not provided

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    P1.01 - Advanced NSCLC (Not CME Accredited Session) (ID 933)

    • Event: WCLC 2018
    • Type: Poster Viewing in the Exhibit Hall
    • Track:
    • Presentations: 2
    • Moderators:
    • Coordinates: 9/24/2018, 16:45 - 18:00, Exhibit Hall
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      P1.01-70 - Efficacy and Safety of Second- or Third-Line Nab-Paclitaxel + Durvalumab in Patients with Advanced NSCLC (ABOUND.2L+) (ID 13042)

      16:45 - 18:00  |  Author(s): Ramaswamy Govindan

      • Abstract

      Background

      Cytotoxic chemotherapy may enhance the effect of immune checkpoint blockers (ICBs) through interaction with the immune system (immunostimulation) and cancer cells (increased antigenicity). The phase II ABOUND.2L+ trial investigated second-/third-line nab-paclitaxel monotherapy, nab-paclitaxel + CC-486, or nab-paclitaxel + durvalumab in patients with previously treated advanced-stage NSCLC. This report presents an updated analysis of the efficacy and safety from the nab-paclitaxel + durvalumab treatment arm.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      Patients ≥ 18 years with advanced NSCLC and no more than 1 prior line of platinum-containing chemotherapy (ICBs in prior line, first/second, allowed) were included. Patients were treated with nab-paclitaxel on days 1 and 8 + durvalumab 1125 mg on day 15 of a 21-day cycle until unacceptable toxicity or progressive disease as per Response Evaluation Criteria In Solid Tumors (RECIST) v1.1 or immune-related RECIST v1.1. The primary endpoint was progression-free survival (PFS). Key secondary endpoints included overall response rate (ORR), disease control rate (DCR), overall survival (OS), and safety.

      4c3880bb027f159e801041b1021e88e8 Result

      A total of 79 patients were assigned to nab-paclitaxel + durvalumab. The median age of patients in that arm was 63.0 years; 68.4% were male, 97.5% were white, 77.2% had ECOG performance status 1, and 69.6% had nonsquamous histology; 8 patients received prior ICBs. Median and 1-year PFS were 4.5 months (95% CI: 3.45-5.88) and 25.7% (95% CI 16.3-36.2); median PFS in those with and without prior ICB treatment was NE (95% CI 1.38-NE) and 4.4 months (95% CI 2.96-5.68) and in those with squamous and nonsquamous histology was 6.0 months (95% CI 2.99-7.75) and 4.2 months (95% CI 2.86-5.75). The ORR was 27.8%, and DCR was 70.9%. Median OS was 10.1 months (95% CI: 7.75-NE). Median percentage of per protocol dose was 87.5% for nab-paclitaxel and 82.9% for durvalumab. All patients had at least 1 treatment-emergent adverse event (TEAE), and 67.9% had at least 1 grade 3 or 4 TEAE. Common TEAEs of special interest (all grades) included peripheral neuropathy (grouped term; 37.2%), diarrhea (34.6%), anemia (30.8%), dyspnea (25.6%), nausea (24.4%), cough (24.4%), pyrexia (19.2%), and neutropenia (17.9%). TEAEs leading to dose interruption/reduction (nab-paclitaxel and/or durvalumab) were reported in 73.1% of patients, and those leading to discontinuation in 11.5%.

      8eea62084ca7e541d918e823422bd82e Conclusion

      nab-Paclitaxel + durvalumab demonstrated promising antitumor activity and manageable toxicity in second- or third-line treatment of patients with advanced NSCLC. NCT02250326.

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      P1.01-93 - Quality of Life in Patients with Advanced NSCLC Treated in Second- or Third-Line with Nab-Paclitaxel + Durvalumab: ABOUND.2L+ (ID 12993)

      16:45 - 18:00  |  Author(s): Ramaswamy Govindan

      • Abstract

      Background

      Quality of life (QoL) can be adversely affected in patients with advanced NSCLC, particularly those receiving second- or third-line treatment. In these patients, checkpoint inhibitors are a recommended treatment option. Through multiple mechanisms, including the release of tumor antigens via tumor cell lysis, chemotherapy can augment immunotherapeutic effects, which is the rationale for combining chemotherapy with immunotherapy agents. The phase II ABOUND.2L+ trial investigated second- or third-line nab-paclitaxel either alone or in combination with CC-486 or durvalumab in patients with advanced NSCLC. The objective of this analysis is to report QoL outcomes in patients treated with nab-paclitaxel + durvalumab from the ABOUND.2L+ trial.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      Enrolled patients were ≥ 18 years with advanced NSCLC and no more than 1 prior line of platinum-containing chemotherapy. Immunotherapy in a prior line, first or second, was allowed. Patients were treated with nab-paclitaxel on days 1 and 8 + durvalumab 1125 mg on day 15 of a 21-day cycle. Treatment continued until unacceptable toxicity or disease progression per Response Evaluation Criteria In Solid Tumors (RECIST) v1.1 or immune-related RECIST v1.1. The primary endpoint was progression-free survival. QoL was a prespecified exploratory endpoint assessed using the Lung Cancer Symptom Scale (LCSS), EuroQol 5D-5L, and EORTC QLQ-C30 on day 1 of each cycle, and was examined through 6 cycles of treatment for this analysis.

      4c3880bb027f159e801041b1021e88e8 Result

      A total of 79 patients were assigned to the nab-paclitaxel + durvalumab arm. The median age was 63.0 years. Most patients were white (97.5%), male (68.4%), and had ECOG PS of 1 (77.2%). For the entire study, baseline and ≥ 1 postbaseline QoL assessments were completed by 58 (73.4%) patients. 41 patients completed 6 cycles of treatment with nab-paclitaxel + durvalumab. After cycle 6, the mean change from baseline in LCSS total score and pulmonary symptom score was 0.1 and −0.2, respectively. LCSS hemoptysis score improved relative to baseline at every treatment cycle; mean change from baseline after 6 cycles was 0.8. Mean change from baseline in the EuroQol 5D-5L visual analog scale score and EORTC QLQ-C30 global health status/QoL scale score after 6 cycles of treatment was 2.5 and −1.19, respectively.

      8eea62084ca7e541d918e823422bd82e Conclusion

      In general, patients with advanced NSCLC treated with second- or third-line nab-paclitaxel + durvalumab maintained their QoL through 6 cycles of treatment. NCT02250326.

      6f8b794f3246b0c1e1780bb4d4d5dc53

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    P1.04 - Immunooncology (Not CME Accredited Session) (ID 936)

    • Event: WCLC 2018
    • Type: Poster Viewing in the Exhibit Hall
    • Track:
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/24/2018, 16:45 - 18:00, Exhibit Hall
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      P1.04-23 - Expression of Emerging Immunotherapy Targets in Early-Stage Squamous Lung Carcinoma (ID 13520)

      16:45 - 18:00  |  Author(s): Ramaswamy Govindan

      • Abstract
      • Slides

      Background

      Anti-PD1/PD-L1 immunotherapy has demonstrated response in approximately 20% of unselected advanced non-small cell lung cancer (NSCLC) patients. Strategies involving combination immunotherapies are under investigation to improve the overall response to immunotherapy. The objective of this study was to identify the expression of emerging immune targets in a cohort of early-stage squamous lung carcinoma (SqLC), which may be used to design combinatorial immunotherapy approaches.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      202 early stage (I-II) SqLC resected patient tumors and corresponding clinical data were collected from 6 cancer centers as part of the SPECS II program. Fourteen emerging immune targets or targeted axis were selected based on their advanced stage of development in preclinical/clinical studies. The mRNA expression level of these targets and PD-1/PD-L1 were determined by Affymetrix U133A gene expression profiling. The correlations among these targets and the overall survival were evaluated.

      4c3880bb027f159e801041b1021e88e8 Result

      The mRNA levels of the immune molecules which were grouped on PD-L1 protein expression in early stage SqLC are shown in Figure 1. No correlation was found between the mRNA level of PD-L1 and the other immune targets expressed on APC/tumor cells, except PD-L2 (r2= 0.41, p<0.00001). We found that the immune cell receptor, CD226, correlated with CD96 and CD112R respectively (r2= 0.514, p<0.00001; r2= 0.476, p<0.00001), and CD96 correlated with CD112R (r2= 0.644, p<0.00001) as well. In addition, higher expression of GAL-9, CD48 and ICOS were associated with better prognosis [p= 0.0358, HR=0.249 (0.068, 0.912); p= 0.0309, HR=1.61 (1.04, 2.49); p= 0.0429, HR=2.47 (1.03, 5.93)].

      figure 1.tif

      8eea62084ca7e541d918e823422bd82e Conclusion

      Several emerging immune targets were expressed at higher levels than PD-L1 in this early stage SqLC cohort. The mRNA levels of all immune targets evaluated were independent of PD-L1 expression, except PD-L2. The expression of GAL-9, CD48 and ICOS were identified as prognostic. These results may provide important information in the design of future combination immunotherapies for early-stage SqLC.

      6f8b794f3246b0c1e1780bb4d4d5dc53

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    P1.16 - Treatment of Early Stage/Localized Disease (Not CME Accredited Session) (ID 948)

    • Event: WCLC 2018
    • Type: Poster Viewing in the Exhibit Hall
    • Track:
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/24/2018, 16:45 - 18:00, Exhibit Hall
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      P1.16-47 - Adjuvant Targeted Therapy Following Standard Adjuvant Therapy for Resected NSCLC: An Initial Report from ALCHEMIST (Alliance A151216) (ID 12828)

      16:45 - 18:00  |  Author(s): Ramaswamy Govindan

      • Abstract
      • Slides

      Background

      The Adjuvant Lung Cancer Enrichment Marker Identification and Sequencing Trial (ALCHEMIST) was launched in 2014 across the National Clinical Trials Network (NCTN) of the National Cancer Institute (NCI). This trial platform aims to enroll up to 8300 patients with resected high-risk non-small cell lung cancer (NSCLC) to facilitate enrollment to adjuvant targeted therapy trials following completion of standard adjuvant therapy, and to collect biospecimens for clinical and investigational genomics. On 5/1/2016, the study was expanded to include squamous NSCLC and PDL1 testing to facilitate enrollment to a new immunotherapy study.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      Eligible patients have completely resected NSCLC, stage IB (>4cm) to IIIA by AJCC 7. Eligibility window extends 75-285 days post-op depending upon receipt of adjuvant chemotherapy and/or radiation. Molecular testing of EGFR, ALK, PDL1 is performed centrally (depending on the histology and testing results) and results are returned to sites within 7-21 days. FFPE tissue and blood are collected by the NCI for genomic analysis. Appropriate patients may then enroll to one of three therapeutic trials studying single agent adjuvant targeted therapy (erlotinib NCT02193282, crizotinib NCT02201992, or nivolumab NCT02595944) versus observation.

      4c3880bb027f159e801041b1021e88e8 Result

      As of March 19, 2018, 2945 patients have been enrolled from 575 sites within the US, with a median enrollment of 98/month (range: 71-133) in 2017. Central molecular testing was completed in 83%-92% of appropriate patients: EGFR L858R/19del was detected in 395 of 2468 patients (16.0%), ALK FISH was positive in 106 of 2458 patients (4.3%), and PDL1 IHC was >1% in 902 of 1464 patients (61.6%). Adequate tissue and blood for whole exome sequencing (WES) was collected on 1928 patients (65.5%), and enrollment plasma (added January 2017) has been collected on 885 patients (30.1%). Of 1960 patients deemed to be eligible for the adjuvant treatment trials with sufficient follow-up, 560 (28.6%) were enrolled; those enrolled were younger (p=0.01) and had higher N stage (<0.01) than those not enrolled. The primary reason for eligible patients not enrolling to treatment trials was lack of interest in further adjuvant therapy (53%).

      8eea62084ca7e541d918e823422bd82e Conclusion

      ALCHEMIST has achieved an enrollment of ~100 patients/month with resected high-risk NSCLC. This initial report demonstrates the feasibility of central molecular testing for enrollment to adjuvant targeted therapies. Efforts are ongoing to plan clinically-informed genomic analyses of tumor and plasma, as well as the planning of new treatment arms that leverage this ongoing trial platform.

      Support: U10CA180821, U10CA180882, U10CA180820, U10CA180868, U10CA180888; ClinicalTrials.gov Identifier: NCT02194738

      6f8b794f3246b0c1e1780bb4d4d5dc53

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