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Tadalafil Enhances Immune Signatures in Response to Neoadjuvant Nivolumab in Resectable Head and Neck Squamous Cell Carcinoma.


ABSTRACT:

Purpose

We hypothesize that the addition of the phosphodiesterase-5 inhibitor tadalafil to the PD-1 inhibitor nivolumab, is safe and will augment immune-mediated antitumor responses in previously untreated squamous cell carcinoma of the head and neck (HNSCC).

Patients and methods

We conducted a two-arm multi-institutional neoadjuvant randomized trial in any-stage resectable HNSCC (NCT03238365). Patients were stratified at randomization by human papillomavirus (HPV) status. Patients in both arms received nivolumab 240 mg intravenously on days 1 and 15 followed by surgery on day 28. Those in the combination therapy arm also received tadalafil 10 mg orally once daily for 4 weeks. Imaging, blood, and tumor were obtained pretreatment and posttreatment for correlative analysis.

Results

Neoadjuvant therapy was well-tolerated with no grade 3 to 5 adverse events and no surgical delays. Twenty-five of 46 (54%) evaluable patients had a pathologic treatment response of ≥20%, including three (7%) patients with a complete pathologic response. Regardless of HPV status, tumor proliferation rate was a negative predictor of response. A strong pretreatment T-cell signature in the HPV-negative cohort was a predictor of response. Tadalafil altered the immune microenvironment, as evidenced by transcriptome data identifying enriched B- and natural killer cell gene sets in the tumor and augmented effector T cells in the periphery.

Conclusions

Preoperative nivolumab ± tadalafil is safe in HNSCC and results in more than 50% of the patients having a pathologic treatment response of at least 20% after 4 weeks of treatment. Pretreatment specimens identified HPV status-dependent signatures that predicted response to immunotherapy while posttreatment specimens showed augmentation of the immune microenvironment with the addition of tadalafil.

SUBMITTER: Luginbuhl AJ 

PROVIDER: S-EPMC8898272 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature

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Publications

Tadalafil Enhances Immune Signatures in Response to Neoadjuvant Nivolumab in Resectable Head and Neck Squamous Cell Carcinoma.

Luginbuhl Adam J AJ   Johnson Jennifer M JM   Harshyne Larry A LA   Linnenbach Alban J AJ   Shukla Sanket K SK   Alnemri Angela A   Kumar Gaurav G   Cognetti David M DM   Curry Joseph M JM   Kotlov Nikita N   Antysheva Zoya Z   Degryse Sandrine S   Mannion Kyle K   Gibson Michael K MK   Netterville James J   Brown Brandee B   Axelrod Rita R   Zinner Ralph R   Tuluc Madalina M   Gargano Stacey S   Leiby Benjamin E BE   Shimada Ayako A   Mahoney My G MG   Martinez-Outschoorn Ubaldo U   Rodeck Ulrich U   Kim Young J YJ   South Andrew P AP   Argiris Athanassios A  

Clinical cancer research : an official journal of the American Association for Cancer Research 20220301 5


<h4>Purpose</h4>We hypothesize that the addition of the phosphodiesterase-5 inhibitor tadalafil to the PD-1 inhibitor nivolumab, is safe and will augment immune-mediated antitumor responses in previously untreated squamous cell carcinoma of the head and neck (HNSCC).<h4>Patients and methods</h4>We conducted a two-arm multi-institutional neoadjuvant randomized trial in any-stage resectable HNSCC (NCT03238365). Patients were stratified at randomization by human papillomavirus (HPV) status. Patient  ...[more]

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