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Publication-only abstracts (abstract number preceded by an "e"), published in conjunction with the 2019 ASCO Annual Meeting but not presented at the Meeting, can be found online only.

Incidence and patterns of immune related adverse events (irAEs) during chemoimmunotherapy (ChemoIO) in patients with advanced nonsquamous NSCLC.

Sub-category:
Metastatic Non-Small Cell Lung Cancer

Category:
Lung Cancer—Non-Small Cell Metastatic

Meeting:
2019 ASCO Annual Meeting

Abstract No:
e20705

Citation:
J Clin Oncol 37, 2019 (suppl; abstr e20705)

Author(s): Pradnya Dinkar Patil, Alexia Zagouras, Wei (Auston) Wei, Nathan A. Pennell; Cleveland Clinic, Cleveland, OH; Cleveland Clinic Foundation, Cleveland, OH

Abstract Disclosures

Abstract:

Background: Based on superior outcomes noted in KEYNOTE-189 with the addition of pembrolizumab to platinum doublet chemotherapy, a majority of pts with nonsquamous NSCLC are now treated with chemoIO. irAEs can cause significant morbidity and occasionally mortality in pts treated with immunotherapy. Since chemotherapy is immunosuppressive, it is plausible that incidence of irAEs would be lower in pts receiving chemoIO compared to immunotherapy. The incidence of irAEs in KEYNOTE-189 was 22.7% vs 29.2% in KEYNOTE-024 with pembrolizumab monotherapy. We sought to evaluate the incidence and patterns of irAEs in pts with advanced nonsquamous NSCLC treated with chemoIO at our institution and to determine if the rate varied with the intensity of chemotherapy [carboplatin/ pemetrexed/ pembrolizumab (CPP) vs pemetrexed/ pembrolizumab (PP)]. Methods: We retrospectively reviewed the charts of 73 pts with advanced nonsquamous NSCLC who received CPP followed by maintenance PP. In addition to clinicopathologic variables, we noted the date, incidence, type and grade of irAEs. Descriptive statistics were used to report the incidence and patterns of irAEs. McNemar’s test was used to determine if there was a significant difference in rate of irAEs during CPP vs PP. Results: Of the 73 pts, 52% were females, 67% former smokers, 49% had previously received radiation and 11% had a history of autoimmune disease. 35 pts received 4 cycles of CPP. 21 patients (28%) developed irAEs, of which 6 had irAEs during CPP and 15 developed irAEs on PP. The rate of irAEs was significantly higher after stopping carboplatin (p = 0.049). 10 pts (13%) stopped pembrolizumab due to irAEs. Organ systems involved and grade of irAEs are listed below. Conclusions: The immunosuppressive effects of intensive chemotherapy may be protective against irAEs in pts receiving chemoIO.

Organ System involvedGradeN%
Dermatology/Skin1 or 245.48
Endocrine1 or 245.48
GI1 or 222.74
3 or 434.11
Hematological1 or 211.37
3 or 411.37
Hepatic/Pancreas1 or 211.37
Neurology1 or 211.37
Pulmonary/Respiratory1 or 211.37
Renal/GU1 or 211.37
3 or 411.37

 
Other Abstracts in this Sub-Category:

 

1. Association of STK11/LKB1 genomic alterations with lack of benefit from the addition of pembrolizumab to platinum doublet chemotherapy in non-squamous non-small cell lung cancer.

Meeting: 2019 ASCO Annual Meeting Abstract No: 102 First Author: Ferdinandos Skoulidis
Category: Lung Cancer—Non-Small Cell Metastatic - Metastatic Non-Small Cell Lung Cancer

 

2. Real-world outcomes of patients with advanced non-small cell lung cancer (aNSCLC) and autoimmune disease (AD) receiving immune checkpoint inhibitors (ICIs).

Meeting: 2019 ASCO Annual Meeting Abstract No: 110 First Author: Sean Khozin
Category: Lung Cancer—Non-Small Cell Metastatic - Metastatic Non-Small Cell Lung Cancer

 

3. RELAY: A multinational, double-blind, randomized Phase 3 study of erlotinib (ERL) in combination with ramucirumab (RAM) or placebo (PL) in previously untreated patients with epidermal growth factor receptor mutation-positive (EGFRm) metastatic non-small cell lung cancer (NSCLC).

Meeting: 2019 ASCO Annual Meeting Abstract No: 9000 First Author: Kazuhiko Nakagawa
Category: Lung Cancer—Non-Small Cell Metastatic - Metastatic Non-Small Cell Lung Cancer

 

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