Response rate and safety of standard-dose nivolumab with reduced-dose ipilimumab in metastatic melanoma.

Authors

null

Inderjit Mehmi

West Virginia University, Morgantown, WV

Inderjit Mehmi, Jordan Hill

Organizations

West Virginia University, Morgantown, WV, WVU Cancer Institute of WVU Medicine, Morgantown, WV

Research Funding

Other

Background: Reduced-dose nivolumab in combination with standard-dose ipilimumab was shown to improve overall response rate (58%), progression free survival (11.5 months), and overall survival compared to ipilimumab alone in Checkmate 067. Improved outcomes were accompanied by an increased risk of toxicities with a 59% rate of grade 3-4 toxicities for the combination. Keynote 029 evaluated standard-dose pembrolizumab with reduced-dose ipilimumab with a slightly lower risk of grade 3-4 toxicities at 45%. Here we report outcomes for standard-dose nivolumab combined with reduced-dose ipilimumab in metastatic melanoma. Methods: We conducted a retrospective review of metastatic melanoma patients that received standard-dose nivolumab with reduced-dose ipilimumab at West Virginia University Cancer Institute. Response to therapy and incidence of immune-related adverse events were assessed. Results: From February 2017 to October 2018, 11 patients received the alternative dosing regimen. Only 1 (9%) patient experienced a grade 3-4 toxicity, and 3 (27%) additional patients experienced a grade 1-2 toxicity. The overall response rate was 54%. Conclusions: Standard-dose nivolumab in combination with reduced-dose ipilimumab is better tolerated than reduced-dose nivolumab with standard-dose ipilimumab without a loss in overall response rate.

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Abstract Details

Meeting

2019 ASCO-SITC Clinical Immuno-Oncology Symposium

Session Type

Poster Session

Session Title

Poster Session B

Track

Breast and Gynecologic Cancers,Developmental Therapeutics,Genitourinary Cancer,Head and Neck Cancer,Lung Cancer,Melanoma/Skin Cancers,Gastrointestinal Cancer,Combination Studies,Implications for Patients and Society,Miscellaneous Cancers,Hematologic Malignancies

Sub Track

Immune Checkpoints and Stimulatory Receptors

Citation

J Clin Oncol 37, 2019 (suppl 8; abstr 140)

DOI

10.1200/JCO.2019.37.8_suppl.140

Abstract #

140

Poster Bd #

F5

Abstract Disclosures