ItRECIST adapted efficacy assessment in solid tumors treated with intratumoral immunotherapy.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 2557-2557
Author(s):  
Honey Kumar Oberoi ◽  
Xavier Serres-Créixams ◽  
Guzman Alonso ◽  
Ignacio Matos ◽  
Alberto Hernando-Calvo ◽  
...  
Keyword(s):  
Checkpoint Inhibitors ◽  
Objective Response ◽  
Systemic Exposure ◽  
Progression Free Survival ◽  
Oncolytic Viruses ◽  
Radiological Assessment ◽  
Safety Issues ◽  
Recist 1.1 ◽  
Kaplan Meier ◽  
Grade 3

2557 Background: The development of human intratumoral therapy (HIT-IT) has surged as a promising strategy to overcome resistance to checkpoint inhibitors (CPI), promoting a stronger tumor-specific immune response while reducing systemic exposure. A broad variety of agents (i.e: oncolytic viruses, toll-like receptors agonists) administered both in superficial- and deep-seated lesions are being currently tested in clinical trials (CT). Due to the local intervention on tumors, radiological assessment by standard RECIST is challenging and new methods of response that capture and integrate the local and systemic response to HIT-IT are needed. We aimed to evaluate the feasibility and clinical utility of itRECIST (Goldmacher et al., 2020) in patients (pts) treated with HIT-IT in early phase CT. Methods: Retrospective analysis of a cohort of pts with different solid tumor types enrolled in CT including HIT-IT in our institution between August’18 and January’21. Clinical characteristics were collected. Efficacy in target-injected (T-I) and target-non-injected (T-NI) lesions was assessed by objective response rate (ORR) and disease control rate (DCR), as per itRECIST. Overall disease ORR and DCR were assessed per RECIST 1.1/iRECIST. Treatment-related adverse events (TRAEs) were assessed with CTCAE v.5.0. ORR was calculated with Clopper-Pearson method. Survival analysis was made using Kaplan-Meier method. Results: A total of 37 pts were included. Median age was 66 years, 19 pts (51%) were male, all pts had ECOG 0-1. 24 pts (65%) were CPI-naïve. Median previous lines of therapy was 2 (range [r]: 0-11). All pts (100%) received minimum 1 dose of HIT-IT. 6 pts (16%) were treated with monotherapy and 31 pts (84%) in combination with CPI. Median HIT-IT and CPI doses administered were 4 (r: 1-9) and 2 (r: 1-13), respectively. Injected lesions: cutaneous (16.2%), subcutaneous (21.6%), lymph node (32.4%), liver (29.7%). Median size of T-I lesions was 40 mm (r: 19-260). At data cutoff, 32 pts were evaluable. Median follow-up was 14.4 weeks (r: 1.0-81.1). Per RECIST 1.1, overall ORR was 6% (95% CI, 5-7) and DCR was 38% (95% CI, 21-56). Per itRECIST, ORR was 19% (95% CI, 7-36) and DCR was 63% (95% CI, 44-79) in T-I lesions (n = 32), and 10% (95% CI, 22-27) and 48% (95% CI, 29-67) in T-NI lesions (n = 29). Mean decrease in responding T-I and T-NI lesions was -47% (r: -21 to -100) and -41% (r: -26 to -59), respectively. No non-target (NT) lesion was injected. Median progression-free survival was 7.4 weeks (95% CI, 6.6 – 8.2). Median overall survival was 10.0 months (95% CI, 2.3 – 17.7). Incidence of TRAE was 58% (grade 1-2 IT-related pyrexia 43%; grade 3-4, 5%). No treatment-related deaths were recorded. Conclusions: ItRECIST is feasible to implement and adds precision to the radiological assessment of local and distant anti-tumor activity of HIT-IT. No safety issues were detected in our cohort.

Salvage immune checkpoint inhibitor (ICI) plus tyrosine kinase inhibitor (TKI) combination therapy for metastatic renal cell carcinoma (mRCC).

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e16567-e16567
Author(s):  
Anish B. Parikh ◽  
Sarah P. Psutka ◽  
Yuanquan Yang ◽  
Katharine Collier ◽  
Abdul Miah ◽  
...  
Keyword(s):  
Combination Therapy ◽  
Immune Checkpoint Inhibitor ◽  
Kinase Inhibitor ◽  
Objective Response ◽  
Progression Free Survival ◽  
Standard Of Care ◽  
Free Survival ◽  
Kaplan Meier ◽  
Grade 3 ◽  
Combination Regimens

e16567 Background: ICI/TKI combinations are a new standard of care for the initial treatment (tx) of mRCC. Efficacy and toxicity of such combination regimens beyond the first-line (1L) setting remain unknown. Methods: We retrospectively reviewed charts for adult patients (pts) receiving an ICI/TKI combination in any line of tx for mRCC of any histology at one of two academic centers as of May 1, 2020. ICIs included pembrolizumab (Pm), nivolumab (Ni), ipilimumab (Ip), or avelumab (Av); TKIs included sunitinib (Su), axitinib (Ax), pazopanib (Pz), lenvatinib (Ln), or cabozantinib (Ca). Clinical data including pt demographics, histology, International mRCC Database Consortium (IMDC) risk group, tx history, and ICI/TKI tx and toxicity details were recorded. Outcomes included objective response rate (ORR), median progression-free survival (mPFS), and safety, analyzed via descriptive statistics and the Kaplan-Meier method. Results: Of 85 pts, 69 (81%) were male and 67 (79%) had clear cell histology. IMDC risk was favorable (24%), intermediate (54%), poor (20%), and unknown (2%). 39% had ICI/TKI tx in the 1L setting. ICI/TKI regimens included Pm/Ax (33%), Ni/Ca (25%), Ni/Ax (20%), Av/Ax (11%), Ni/Ip/Ca (8%), Ni/Su (2%), and Ni/Ln (1%). ORR and mPFS stratified by line of tx and prior tx are shown in the table. Of 52 pts who received ICI/TKI tx as salvage (after 1L), 52% had a grade 3 or higher (≥G3) adverse event (AE), of which the most common were anorexia (13.5%), diarrhea and hypertension (11.5% each), and fatigue (9.6%). 65% of pts on salvage ICI/TKI tx stopped tx for progression/death, while 16% stopped tx for ≥G3 AE. ≥G3 AE rates by line of tx were 62.5% (2L), 50% (3L), and 45% (≥4L). Conclusions: ICI/TKI combination therapy is effective and safe beyond the 1L setting. Prior tx history appears to impact efficacy but has less of an effect on safety/tolerability. These observations will need to be confirmed in prospective studies.[Table: see text]

Assessment of sacituzumab govitecan (SG) versus treatment of physician’s choice (TPC) cohort by agent in the phase 3 ASCENT study of patients (pts) with metastatic triple-negative breast cancer (mTNBC).

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 1077-1077
Author(s):  
Joyce O'Shaughnessy ◽  
Kevin Punie ◽  
Mafalda Oliveira ◽  
Filipa Lynce ◽  
Sara M. Tolaney ◽  
...  
Keyword(s):  
Single Agent ◽  
Objective Response ◽  
Progression Free Survival ◽  
Standard Of Care ◽  
Antibody Drug Conjugate ◽  
Phase 3 ◽  
Chemotherapy Agent ◽  
Recist 1.1 ◽  
Duration Of Response ◽  
Grade 3

1077 Background: In pts with pretreated mTNBC, standard-of-care chemotherapy is associated with low objective response rates (ORRs) and short median progression-free survival (PFS). SG is an antibody-drug conjugate composed of an anti–Trop-2 antibody coupled to the cytotoxic SN-38 payload via a proprietary, hydrolyzable linker. SG received accelerated FDA approval for treatment of pts with mTNBC who have received ≥2 prior therapies for metastatic disease. The confirmatory phase 3 ASCENT study (NCT02574455) in pts with relapsed/refractory mTNBC demonstrated a significant survival benefit of SG over TPC (median PFS: 5.6 vs 1.7 mo, HR 0.41, P< 0.0001; median overall survival [OS]: 12.1 vs 6.7 mo, HR 0.48, P< 0.0001) with a tolerable safety profile. Here we summarize efficacy results for SG vs each TPC agent in ASCENT to examine how each TPC agent performed individually. Methods: Pts had mTNBC refractory to or progressing after ≥2 prior standard chemotherapy regimens. Pts were randomized 1:1 to receive SG (10 mg/kg intravenously on days 1 and 8, every 21 days) or single-agent TPC (eribulin, vinorelbine, capecitabine, or gemcitabine). Primary endpoint was PFS per RECIST 1.1 by independent review in brain metastases-negative (BMNeg) pts. Secondary endpoints were ORR per RECIST 1.1, duration of response, OS, and safety. Outcomes for each of the agents in the TPC arm were analyzed and compared with SG. Results: Of 529 pts enrolled, 468 were BMNeg. Among pts in the TPC cohort (n = 233), eribulin was the most commonly chosen chemotherapy (n = 126), followed by vinorelbine (n = 47), capecitabine (n = 31), and gemcitabine (n = 29). Treatment with eribulin, vinorelbine, capecitabine, and gemcitabine resulted in shorter median PFS vs SG (2.1, 1.6, 1.6, and 2.7 vs 5.6 mo, respectively); similar results were observed for median OS (6.9, 5.9, 5.2, and 8.4 vs 12.1 mo), ORR (5%, 4%, 6%, and 3% vs 35%), and clinical benefit rate (CBR; 8%, 6%, 10%, and 14% vs 45%). Key grade ≥3 treatment-related adverse events (TRAEs) with TPC overall vs SG included neutropenia (33% vs 51%), leukopenia (5% vs 10%), fatigue (5% vs 3%), and anemia (5% vs 8%). Key grade ≥3 TRAEs with eribulin vs SG included neutropenia (30% vs 51%), leukopenia (5% vs 10%), fatigue (5% vs 3%), anemia (2% vs 8%), and peripheral neuropathy (2% vs none), respectively. The safety profiles of vinorelbine, capecitabine, and gemcitabine combined were consistent with that of TPC overall and with eribulin. One treatment-related death was reported for the TPC arm (eribulin) and none with SG. Conclusions: The efficacy benefit observed with SG vs TPC in pts with mTNBC was retained when evaluating each TPC chemotherapy agent individually. These results confirm that SG should be considered as a new standard of care in pts with pretreated mTNBC. Clinical trial information: NCT02574455 .

Tissue tumor mutational burden (TMB) as a biomarker of efficacy with immune checkpoint inhibitors (ICI) in metastatic gastrointestinal (mGI) cancers.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e14559-e14559
Author(s):  
Robert William Lentz ◽  
Tyler Friedrich ◽  
Junxiao Hu ◽  
Alexis Diane Leal ◽  
Sunnie S. Kim ◽  
...  
Keyword(s):  
Checkpoint Inhibitors ◽  
Objective Response ◽  
Retrospective Chart Review ◽  
Progression Free Survival ◽  
Predictive Biomarker ◽  
Continuous Variable ◽  
Tumor Type ◽  
Logistic Regression Models ◽  
Kaplan Meier ◽  
Academic Center

e14559 Background: While TMB is very dependent on methodology, tissue TMB-H (≥10 mutations/megabase) may predict benefit with ICIs. Pembrolizumab received tissue-agnostic approval for TMB-H unresectable cancers in 2020, but little is known about TMB as a predictive biomarker in mGI cancers. We hypothesized that tissue TMB will correlate with efficacy of ICIs in mGI cancers. Methods: A retrospective chart review identified patients with mGI cancers who received an anti-PD-(L)1 drug and had known TMB at a single academic center from 2012 to 2020. The association of TMB with objective response rate (ORR), progression-free survival (PFS), and overall survival (OS) was analyzed using the Fisher’s exact and Log-rank tests. Survival curves were generated using the Kaplan-Meier method. Cox proportional hazard and logistic regression models were used to adjust for microsatellite status. Significance was prespecified at 0.05. Results: 83 patients were identified and included. The most common cancer types were colorectal adenocarcinoma (AC, n = 29), esophageal/gastric AC (n = 21) and SCC (n = 4), cholangiocarcinoma (n = 11), anal SCC (n = 7), and pancreas AC (n = 7). Average age was 61, average number of lines of prior systemic therapy for advanced disease was 1.3 (range 0-4), and 37% of patients were treated on a clinical study. All patients received an anti-PD-(L)1 drug; 6%, 2%, and 36% also received ipilimumab, cytotoxic chemotherapy, and other combinations, respectively. Among those with esophageal/gastric cancer, 76% had known PD-L1 CPS (84% ≥1, 63% ≥5, 42% ≥10). TMB was primarily determined by Foundation One CDx (87%). TMB ranged from 0 to 54; n = 22 (27%) were TMB-H (of these, n = 10 were microsatellite instability-high (MSI-H)), and n = 61 were TMB-L ( < 10 mutations/megabase; of these, n = 2 were MSI-H). The prevalence of TMB-H and microsatellite stable (MSS) was 14.4%. TMB-L, compared to TMB-H, was associated with inferior ORR (3.5% vs 55.6%; odds ratio (OR) 0.045; p < 0.001) and PFS (median 12.7 vs 29.3 weeks; hazard ratio (HR) 2.70; p = 0.001), but not OS (HR 1.20; p = 0.60). In patients with MSS disease, TMB-L, compared to TMB-H, was associated with inferior ORR (OR 0.13; p = 0.04) but not PFS (HR 1.76; p = 0.07) or OS (HR 0.89; p = 0.79). In subgroup analyses, ORR was not significantly associated to tumor type in all or MSS patients. TMB as a continuous variable, in patients with MSS disease, was positively correlated with ORR (p = 0.02) and PFS (p = 0.04), but not OS (p = 0.59). Among all patients, PFS and OS data is immature (median follow-up 13 and 31 weeks). Conclusions: In a single center retrospective study of patients with mGI cancers treated with ICIs, TMB-H was associated with improved ORR and PFS compared to TMB-L. In patients with MSS disease, ORR remained significant. PFS and OS data are immature. TMB as a biomarker of efficacy with ICIs in mGI cancers warrants further study to guide clinical use.

Phase Ib/II open-label, randomized evaluation of atezolizumab (atezo) + Imprime PGG (Imprime) + bevacizumab (bev) vs regorafenib (rego) in MORPHEUS: Microsatellite-stable (MSS) metastatic colorectal cancer (mCRC).

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 3559-3559
Author(s):  
Marwan Fakih ◽  
James M. Cleary ◽  
Yong Sang Hong ◽  
Tae-You Kim ◽  
Rachael A Safyan ◽  
...  
Keyword(s):  
Stable Disease ◽  
Checkpoint Inhibitors ◽  
Macrophage Polarization ◽  
Objective Response ◽  
Systemic Exposure ◽  
Progression Free Survival ◽  
Open Label ◽  
Multikinase Inhibitor ◽  
Phase Ib ◽  
M1 Macrophage

3559 Background: The MORPHEUS platform consists of multiple, global, open-label, randomized Phase Ib/II trials designed to identify early efficacy and safety signals of treatment (tx) combinations across cancers. Here, atezo (anti-PD-L1) was tested with Imprime and bev (anti-VEGF) for MSS mCRC, a poorly immunogenic cancer generally resistant to checkpoint inhibitors. Imprime acts as a pathogen-associated molecular pattern that, when bound to anti-β glucan antibodies (ABA), activates the innate immune system with the potential to 1) promote priming and expansion of tumor-specific T cells, 2) promote M2-M1 macrophage polarization and 3) enhance the immunomodulatory effects of atezo and bev. Therefore, we hypothesized that atezo + Imprime + bev would induce an antitumor response beyond that of rego, a standard-of-care multikinase inhibitor, in patients (pts) with MSS mCRC. Methods: Pts with MSS mCRC unselected for the Imprime-specific biomarker (ABA) and refractory to 1-2 prior lines of standard therapy received atezo (1200 mg IV every 3 weeks [q3w]) + Imprime (4 mg/kg IV on Days 1, 8, 15) + bev (7.5 mg/kg IV q3w) or control tx with rego (160 mg orally days 1-21; dose escalation to 160 mg during Cycle 1 allowed per institutional guidelines). The primary endpoint was objective response rate (ORR; investigator-assessed RECIST 1.1); secondary endpoints included disease control rate (DCR; response or stable disease ≥ 12 weeks), progression-free survival (PFS), overall survival (OS) and safety. Results: Pts were followed-up for ≥18 wk. 15 pts received atezo + Imprime + bev and 13 received rego. Grade (Gr) 3/4 tx-related adverse events (TRAEs) were seen in 13% of atezo + Imprime + bev and 62% of rego pts. No Gr 5 AEs occurred in atezo + Imprime + bev pts and 1 (8%) was reported in a rego pt. One pt in each arm (7% vs 8%, respectively) withdrew from tx due to a TRAE. No radiological responses were seen in either arm. Five pts (33%) receiving atezo + Imprime + bev and 8 (62%) receiving rego had stable disease as best response. DCR was 13% with atezo + Imprime + bev and 23% with rego. Median PFS was 1.5 mo (95% CI: 1.4, 2.8) and 2.8 mo (95% CI: 1.6, 3.1), and median OS was 5.7 mo (95% CI: 4.4, 10.5) and 10.2 mo (95% CI: 4.8, NE) with atezo + Imprime + bev and rego, respectively. There was no apparent correlation between baseline PD-L1 expression or CD8+ lymphocyte tumor infiltration and clinical benefit. Further, the systemic exposure of atezo, Imprime and bev and immunogenicity of atezo and bev are in line with previous clinical experience. Additional biomarker, pharmacokinetics and anti-drug antibody data will be shown. Conclusions: Atezo + Imprime + bev was well tolerated; toxicities were consistent with the safety profiles of the individual agents. No efficacy signal was identified with atezo + Imprime + bev in pts with MSS refractory mCRC. Clinical trial information: NCT03555149.

scholarly journals Ramucirumab in Combination with Pembrolizumab in Treatment-Naïve Advanced Gastric or GEJ Adenocarcinoma: Safety and Antitumor Activity from the Phase 1a/b JVDF Trial

Cancers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2985
Author(s):  
Ian Chau ◽  
Nicolas Penel ◽  
Andres O. Soriano ◽  
Hendrik-Tobias Arkenau ◽  
Jennifer Cultrera ◽  
...  
Keyword(s):  
Antitumor Activity ◽  
Checkpoint Inhibitors ◽  
Objective Response ◽  
Progression Free Survival ◽  
Clinical Activity ◽  
Metastatic Setting ◽  
Duration Of Response ◽  
Treatment Naïve ◽  
Combined Positive Score ◽  
Grade 3

Ramucirumab (anti-VEGFR2) plus pembrolizumab (anti-PD1) demonstrated promising antitumor activity and tolerability among patients with previously treated advanced cancers, supporting growing evidence that combination therapies modulating the tumor microenvironment may expand the spectrum of patients who respond to checkpoint inhibitors. Here we present the results of this combination in first-line patients with metastatic G/GEJ cancer. Twenty-eight patients (≥18 years) with no prior systemic chemotherapy in the advanced/metastatic setting received ramucirumab (8 mg/kg days 1 and 8) plus pembrolizumab (200 mg day 1) every 3 weeks as part of JVDF phase 1a/b study. The primary endpoint was safety. Secondary endpoints included progression-free survival (PFS), objective response rate (ORR), and overall survival (OS). Tumors were PD-L1-positive (combined positive score ≥ 1) in 19 and -negative in 6 patients. Eighteen patients experienced grade 3 treatment-related adverse events, most commonly hypertension (14%) and elevated alanine/aspartate aminotransferase (11% each), with no grade 4 or 5 reported. The ORR was 25% (PD-L1-positive, 32%; PD-L1-negative, 17%) with duration of response not reached. PFS was 5.6 months (PD-L1-positive, 8.6 months; PD-L1-negative, 4.3 months), and OS 14.6 months (PD-L1-positive, 17.3 months; PD-L1-negative, 11.3 months). Acknowledging study design limitations, ramucirumab plus pembrolizumab had encouraging durable clinical activity with no unexpected toxicities in treatment-naïve biomarker-unselected metastatic G/GEJ cancer, and improved outcomes in patients with PD-L1-positive tumors.

Efficacy and safety of sunitinib (SU) in patients (pts) with metastatic renal cell carcinoma (mRCC) and lung metastases (mets) only at baseline.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. e15098-e15098
Author(s):  
Nobuo Shinohara ◽  
Hideyuki Akaza ◽  
Yoshihiko Tomita ◽  
Takeshi Yuasa ◽  
Hiroyuki Fujimoto ◽  
...  
Keyword(s):  
Lung Metastases ◽  
Objective Response ◽  
White Blood Cells ◽  
Progression Free Survival ◽  
Rank Test ◽  
Efficacy And Safety ◽  
Kaplan Meier ◽  
Common Grade ◽  
Hand Foot Syndrome ◽  
Grade 3

e15098 Background: The lungs may be the sole site of mets in RCC.In this retrospective analysis, we analyzed the efficacy and safety of SU in mRCC pts from a global phase (ph) III study and a Japanese ph II study who had lung mets only at baseline. Methods: In the ph III study, treatment (Tx)-naïve mRCC pts were randomized 1:1 to SU 50 mg/d on a 4-weeks-on-2-weeks-off schedule (n=375) or interferon-a (IFN) 9 MU subcutaneously TIW (n=360). In the single-arm ph II study, Tx-naïve (n=25) and cytokine refractory (n=26) mRCC pts received the same SU Tx. In the ph III study, progression-free survival (PFS) and overall survival (OS) were estimated by Kaplan–Meier method, with median values compared by log-rank test. In both studies, objective response rate (ORR) was calculated with a two-sided 95% CI. PFS, OS, ORR, and safety were analyzed at final data cutoff. Results: In the ph III study, 31 (8%) and 42 (11%) pts in the SU and IFN groups, respectively, had lung mets only, compared with 12 (24%) in the ph II study. Baseline characteristics in lung mets pts were similar to all pts. In lung mets pts from the ph III study, ORR was higher with SU than with IFN (58.1% [95% CI: 39.1–75.5] vs. 19.0% [95% CI: 8.6–34.1]; P<0.001); there was a trend for longer median PFS with SU (14.1 vs. 7.8 months; HR: 0.531 [95% CI: 0.278–1.015]; P=0.0513); and median OS was comparable in both Tx subgroups (HR: 0.739 [95% CI: 0.335–1.628]; P=0.4507), although, at 25% of events, median OS was 22.9 months with SU vs. 15.8 months with IFN. In lung mets pts from the ph II study, ORR was 75.0% (95% CI: 42.8–94.5); at the time of analysis, median PFS and OS had not been reached; 4 pts (33%) had died due to any cause and 8 (67%) were alive without disease progression. The most common grade ≥3 SU-related AEs were fatigue, hand-foot syndrome, and diarrhea (all 19%) in the ph III study, and decreased platelets (100%), white blood cells (92%), and neutrophils (92%) in the ph II study. Conclusions: In the ph III study, Tx-naïve mRCC pts with lung mets only had significantly higher ORR and a trend for improved PFS and OS with SU compared with IFN. In the Japanese ph II study, ORR with SU was 75% in lung mets pts. Thus, 1st-line use of SU in mRCC pts with lung mets should be encouraged.

Efficacy of immune checkpoint inhibitors (ICIs) for in-transit melanoma.

2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 9583-9583 ◽  
Author(s):  
Emilia Nan Tie ◽  
Julia Elizabeth Lai-Kwon ◽  
Lumine Na ◽  
Michael Alexander Rtshiladze ◽  
James Bozzi ◽  
...  
Keyword(s):  
Checkpoint Inhibitors ◽  
Single Agent ◽  
Objective Response ◽  
Progression Free Survival ◽  
Mek Inhibitor ◽  
Disease Recurrence ◽  
Kaplan Meier ◽  
Melanoma Metastases ◽  
Locoregional Therapies ◽  
In Transit

9583 Background: The efficacy of ICIs in metastatic melanoma is well-established. However, there is limited data regarding their efficacy in in-transit melanoma metastases (ITM). This study assessed the efficacy of ICI in patients with ITM. Methods: A multisite, retrospective review of patients with ITM treated with ICI from 2004-2018. Demographic and clinicopathological factors (age, sex, primary site, AJCC version 8 stage, BRAF status, prior locoregional therapies) were collected. Objective response rate (ORR) based on a clinician-assessed best overall response, progression free survival (PFS) and overall survival (OS) were analyzed by the Kaplan-Meier method. Results: Fifty-four patients were included: 27 (50%) female; median age 69 (range 19-89); 12 (22%) stage IIIB, 40 (74%) stage IIIC and 2 (4%) stage IIID; 10(19%) BRAF mutant. Forty (74%) received single agent PD-1 inhibitor (pembrolizumab or nivolumab), 8 (15%) single agent anti-CTLA-4 (ipilimumab), 5 (9%) combination anti-PD-1/anti-CTLA-4 (ipilimumab and nivolumab or pembrolizumab) and 1 (2%) combination anti-PDL-1/MEK inhibitor (atezolizumab and cobimetinib). ORR to ICI was 54%: 14 (26%) complete responses; 15 (28%) partial responses; 9 (17%) stable disease; 16 (30%) progressive disease. Thirteen (46%) responders had only one ITM lesion. ORR was 58% for single agent anti PD-1, 38% for single agent anti-CTLA4, and 40% for anti-PD-1/anti-CTLA-4 (Table). The median follow-up was 15 months (2-46). The median PFS was 11.7 months (6.6-N/A). PFS at 1 and 2 years were 48% and 39%. Fourteen (56%) progressed locoregionally and 11 (44%) progressed distantly. OS at 1 and 2 years were 85% and 63%; the median OS was not reached. No clinicopathological features were associated with ORR. Conclusions: ICI produces objective responses in ITM and should be considered in patients with unresectable ITM or disease recurrence despite locoregional therapies. [Table: see text]

Improved survival among patients with malignant pleural mesotheliomas who develop immune-related adverse events on immunotherapy.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 8556-8556
Author(s):  
Michael Offin ◽  
Jacklynn V. Egger ◽  
Caroline G. McCarthy ◽  
Vasilisa Rudneva ◽  
Jason Beattie ◽  
...  
Keyword(s):  
Adverse Events ◽  
Median Time ◽  
Checkpoint Inhibitors ◽  
Single Agent ◽  
Progression Free Survival ◽  
Clinicopathologic Characteristics ◽  
Kaplan Meier ◽  
Clinicopathologic Feature ◽  
Thoracic Radiation ◽  
Grade 3

8556 Background: While immune checkpoint inhibitors (ICI) are a standard option for patients with malignant pleural mesotheliomas (MPM), there is limited data on the rate of immune related adverse events (irAEs) and effects on clinical outcomes. Methods: 61 patients with MPM who received ICI between January 2016 and October 2020 were assessed and followed through November 2020. irAEs (CTCAE v5.0) were noted along with the time from ICI start to irAE onset. Patients were grouped into irAE ever versus never. Clinicopathologic characteristics, prior treatments, and investigator assessed clinical benefit rate (CBR; partial response [PR] + stable disease [SD]) were compared by Fisher’s Exact and Mann-Whitney Tests. Overall survival (OS) and investigator assessed progression free survival (PFS) from ICI start were compared using Kaplan Meier. In consented patients (n = 56), next generation sequencing (MSK-IMPACT) was performed with HLA genotyping analysis by POLYSOLVER software and alleles for the three major MHC class I (HLA-A, -B, -C) genes were obtained from whole exome recapture. Results: Most patients were male (72%), smokers (55%), > 70 years old (median 72, range 34-90), and had epithelioid histology (67%). No patients had baseline autoimmune disease. The median line of prior systemic therapies to ICI start was 2 (range 1-5). 17 patients (28%) developed an irAE on therapy including 7 (11%) with grade 3 to 5 events (pneumonitis, myositis, pancreatitis, nephritis, encephalitis and adrenal insufficiency). The median time from ICI start to irAE was 2.5 months (range 2 days – 5.8 months). There was no association with dual ICI (n = 6) vs single agent (n = 11) and sooner onset (2.1 vs 4.0 months; p = 0.10) nor higher grade (median grade 2 vs 3; p = 0.31) of irAEs. 1 patient developed grade 5 pneumonitis with onset 2 days after initial dose of dual-ICI. Comparing patients with irAEs to those without, there was no difference in distribution of epithelioid histology (n = 10 vs 31; p = 0.54), median age (71 vs 72 years old; p = 0.43), nor prior thoracic radiation (n = 5 vs 11; p = 0.75).There was no difference in HLA type nor the fraction of HLA alleles of individual genes amongst the groups. Patients who had an irAE were on ICI longer than those that did not (median time on ICI 5.4 vs 0.9 months, respectively; p = 0.02). OS was higher in patients with irAEs compared to those without (21.1 vs 4.7 months; p = 0.003) as was PFS (6.8 vs 1.7 months; p = 0.01). There was a significant increase in the CBR between those that had an irAE (65%; 5 PR, 6 SD) and those that did not (27%; 2 PR, 10 SD; p = 0.006). Conclusions: 28% of patients with MPM who received ICIs developed an irAE and onset tended to be early in the course of treatment. There was no clear predictive clinicopathologic feature that correlated with the occurrence of irAE. There was a significant increase in OS, PFS, and CBR in patients that had an irAE compared to those that did not.

Outcomes of patients (pts) with metastatic clear-cell renal cell carcinoma (mCCRCC) treated with second-line (2L) vascular endothelial growth factor receptor tyrosine kinase inhibitors (VEGFR-TKI) after first-line (1L) immune checkpoint inhibitors (ICI).

2018 ◽  
Vol 36 (6_suppl) ◽  
pp. 682-682 ◽  
Author(s):  
Amishi Yogesh Shah ◽  
Emily Lemke ◽  
Jianjun Gao ◽  
Anuradha Chandramohan ◽  
Matthew T. Campbell ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Kinase Inhibitors ◽  
Checkpoint Inhibitors ◽  
Objective Response ◽  
Growth Factor Receptor ◽  
Progression Free Survival ◽  
Cell Renal Cell Carcinoma ◽  
Impaired Wound Healing ◽  
Kaplan Meier ◽  
Best Response

682 Background: Little data exists on objective response rates (ORR), progression-free survival (PFS), and safety of 2L VEGFR-TKI after 1L ICI therapy in pts with mCCRCC. Methods: This is a retrospective study of pts with mCCRCC who received 2L VEGFR-TKI after progressive disease (PD) with 1L ICI. Tumor response was assessed by a blinded radiologist using RECIST 1.1. Descriptive statistics, the Fisher’s test, and Kaplan-Meier method were used. Results: We report on 43 pts who were treated at MDACC from 2015 till present. Median age at mCCRCC diagnosis was 59 years (range: 43-72). 33 pts had lung mets, 20 had LN mets, 14 had bone mets, and 3 had liver mets. As 1L therapy, 20 pts received nivolumab + ipilimumab, 14 received nivolumab + bevacizumab, and 9 received nivolumab. Median time on ICI therapy was 29.4 weeks. All pts had resolution of Grade 3/4 AEs from ICI and PD before initiation of VEGFR-TKI. One patient (2%) had CR, 17 pts (40%) had PR, and 25 pts (58%) had SD, leading to 100% disease control rate (DCR) as best response to 2L VEGFR-TKI. Median PFS was 10.0 months (95% CI: 7.4, NA). Estimated 1-yr overall survival (OS) was 87.5% (95% CI: 74.6 - 100). Seven pts (16%) discontinued VEGFR-TKI therapy because of AEs: Gr 3 transaminitis (3 on pazopanib), Gr 3 hand-foot skin reaction (1 on axitinib), impaired wound healing (1 on axitinib), and Gr 3 pancreatitis (1 on pazopanib, 1 on axitinib). Conclusions: In this retrospective study, we observed a 42% ORR, a 10-month median PFS, and a 100% DCR in pts with mCCRCC who received VEGFR-TKI after PD with ICI. These results inform the design of trials with 2L VEGFR-TKI after failure of ICI therapy. [Table: see text]

The anti–PD-1 antibody spartalizumab (S) in combination with dabrafenib (D) and trametinib (T) in previously untreated patients (pts) with advanced BRAF V600–mutant melanoma: Updated efficacy and safety from parts 1 and 2 of COMBI-i.

2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 9531-9531 ◽  
Author(s):  
Georgina V. Long ◽  
Celeste Lebbe ◽  
Victoria Atkinson ◽  
Mario Mandalà ◽  
Paul D. Nathan ◽  
...  
Keyword(s):  
Checkpoint Inhibitors ◽  
Objective Response ◽  
Safety Data ◽  
Stage Iv ◽  
Progression Free Survival ◽  
Antigen Expression ◽  
Synergistic Activity ◽  
Efficacy And Safety ◽  
Grade 3

9531 Background: Checkpoint inhibitors and targeted therapies have improved outcomes in pts with BRAF V600–mutant advanced melanoma; however, many pts progress and new treatment (tx) strategies are needed. BRAF inhibition increases T-cell infiltration, melanoma antigen expression, and PD-1/PD-L1 expression, which may lead to synergistic activity with anti–PD-1 therapy. Methods: COMBI-i is investigating first-line S 400 mg Q4W + D 150 mg BID + T 2 mg QD in pts with unresectable or metastatic BRAF V600–mutant melanoma (NCT02967692). Here we report pooled efficacy and safety data from parts 1 (run-in cohort) and 2 (biomarker cohort). Response was assessed per RECIST v1.1. Results: 36 pts were enrolled (part 1: n = 9; part 2: n = 27); 18 (50%) had stage IV M1c and 15 (42%) had elevated LDH levels. At the data cutoff (median follow-up, 15.2 mo), tx was ongoing in 17 pts (47%). The confirmed objective response rate (ORR) by investigator assessment was 75% (n = 27), with 33% complete responses (CRs; n = 12). Medians for duration of response (DOR; 7/27 pts with events), progression-free survival (PFS; 13/36 pts with events), and overall survival (OS; 7/36 pts with events) were not reached. 12-mo DOR rate was 71.4% (95% CI, 49%-85%). 12-mo PFS and OS rates were 65.3% (95% CI, 47%-79%) and 85.9% (95% CI, 69%-94%), respectively. In pts with high baseline LDH: ORR was 67%, with 3 CRs (20%), median PFS was 10.7 mo (events in 10/15 pts [67%]), and median OS was not reached, with events in 6/15 pts (40%). All pts had ≥ 1 AE; 27 (75%) had grade ≥ 3 AEs. 6 pts (17%) had AEs leading to discontinuation of all 3 study drugs. Any-grade AEs in ≥ 40% of pts included pyrexia, chills, fatigue, cough, and arthralgia. Grade ≥ 3 AEs in > 3 pts were neutropenia, pyrexia, and increased lipase. One pt died of cardiac arrest that was not considered related to study tx. Conclusions: S+D+T showed promising and durable ORR (75%) with CR in 33% of pts. With > 15 mo of follow-up, median PFS was not reached. The safety profile was manageable reflecting individual toxicities of D, T, and S. The global, placebo-controlled, randomized phase 3 (part 3) of COMBI-i is ongoing. Clinical trial information: NCT02967692.

Sign in / Sign up

Export Citation Format

Share Document