Nivolumab and BMS986205 in Treating Patients With Stage II-IV Squamous Cell Cancer of the Head and Neck

PRIMARY OBJECTIVES:

I. To assess the impact of IDO1 inhibitor BMS-986205 (BMS986205) and nivolumab versus
nivolumab alone on tumor radiographic response both at the primary tumor site and in regional
lymph nodes by investigator assessment at 5 weeks.

SECONDARY OBJECTIVES:

I. To investigate whether adding the IDO1 - inhibitor, BMS986205, to nivolumab therapy
affects intratumoral and systemic anti-tumor immunity.

II. To assess the impact of BMS986205 and nivolumab verses nivolumab alone on pathologic
treatment effect bother at the primary and regional lymph nodes.

III. To determine the effect of BMS986205 and nivolumab versus nivolumab alone on immune cell
composition within the tumor microenvironment including the presence of effector T cells
(Teff), regulatory T cells (Treg), and tumor-associated macrophages (TAM).

IV. To further characterize the effect of BMS986205 when combined with nivolumab on
kynurenine production and correlate these levels with effects on immune cell composition and
polarization.

V. To review the relationship of p16 status by immunohistochemistry with immune cell
polarization, tumor radiographic response, and immune cell composition.

VI. To review the relationship of PD-L1 status by immunohistochemistry with immune cell
polarization, tumor radiographic response, and immune cell composition.

VII. To assess the safety and tolerability of BMS986205 and nivolumab. VIII. Evaluate
surgical wound healing post treatment.

EXPLORATORY OBJECTIVES:

I. To further characterize the effect of BMS986205 and nivolumab versus nivolumab alone
through analysis of T cell repertoire.

II. To assess the interactions between the immune and metabolic microenvironment through
analysis of alterations in exosome composition in peripheral blood as it related to immune,
cytokine and metabolic alterations before, during and after treatment.

III. To identify risks for poor physical and mental health outcomes; examine bio-behavioral
factors associated with cancer treatment outcomes; and evaluate the physical and psychosocial
needs of cancer survivors through patient reported outcomes.

OUTLINE: Patients are randomized to 1 of 2 arms.

ARM I: Patients receive IDO1 inhibitor BMS-986205 orally (PO) once daily (QD). Beginning week
2, patients also receive nivolumab intravenously (IV) over 30 minutes on day 1. Treatment
repeats for up to 5 weeks in the absence of disease progression or unacceptable toxicity.
Patients showing a treatment response receive IDO1 inhibitor BMS-986205 PO QD for 4
additional weeks and receive nivolumab IV over 30 minutes on day 1, then undergo surgery at
week 10. Those without a treatment response after 5 weeks undergo surgery within 7 days.

ARM II: Patients receive nivolumab IV over 30 minutes on day 1 in the absence of disease
progression or unacceptable toxicity. Patients showing treatment response after 4 weeks
receive nivolumab IV over 30 minutes on day 1, then undergo surgery at week 9. Those without
a treatment response after 4 weeks undergo surgery within 7 days.

After completion of study treatment, patients are followed up periodically for 12 months.

Inclusion Criteria:

- Pathologically confirmed head and neck squamous cell carcinoma (HNSC).

- Any stage 2 or greater HNSCC (American Joint Committee on Cancer [AJCC] 8th edition)
of the 1) oral cavity, 2) larynx, 3) hypopharynx, 4) nasal cavity/paranasal sinuses or
5) stage 1 oropharyngeal with lymphadenopathy. Patients with resectable disease that
is amenable to surgery are eligible.

- Eastern Cooperative Oncology Group (ECOG) performance status 0-2.

- White blood cells 2000/ul or more.

- Absolute neutrophil count 1500/ul or more.

- Platelets 100,000/ul or more.

- Hemoglobin 9 g/dl or more.

- Bilirubin less than or equal to 1.5 x the upper limit of normal (except subjects with
Gilbert syndrome, who can have total bilirubin < 3 mg/dl).

- Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) less than or equal
to 3 x the upper limit of normal.

- Glomerular filtration rate (GFR) greater than or equal to 40 ml/min using the
Cockcroft-Gault formula or serum creatinine less than or equal to 1.5 x ULN.

- Women of child bearing potential (WOCBP) should have a negative serum or urine
pregnancy test (minimum sensitivity 25 IU/L or equivalent units of human chorionic
gonadotropin [HCG]) within 21 days of study enrollment.

- WOCBP must agree to follow instructions for method(s) of contraception for the
duration of treatment with study treatment(s) plus 5 months post-treatment completion.

- Males who are sexually active with WOCBP must agree to follow instructions for
method(s) of contraception for the duration of treatment with study treatment(s) plus
7 months post-treatment completion. In addition, male participants must be willing to
refrain from sperm donation during this time.

- Males who are sexually active with WOCBP must agree to use a condom during any sexual
activity for the duration of treatment with study treatment plus 7 months after the
last dose of the study treatment (i.e., 90 days [duration of sperm turnover] plus the
time required for nivolumab to undergo approximately 5 half-lives). This criterion
applies to azoospermic males as well. In addition, male participants must be willing
to refrain from sperm donation during this time.

- Male mandatory condom use is regardless of whether the participant has undergone
a successful vasectomy or if the female partner is pregnant.

- Investigators shall counsel WOCBP, and male participants who are sexually active
with WOCBP, on the importance of pregnancy prevention and the implications of an
unexpected pregnancy. Investigators shall advise on the use of highly effective
methods of contraception, which have a failure rate of < 1% when used
consistently and correctly. Hormonal contraceptives are prohibited methods of
contraception for participants receiving BMS-986205 this study who are WOCBP.

- All subjects must be able to comprehend and sign a written informed consent document.

Exclusion Criteria:

- Patients with nasopharyngeal carcinoma, salivary gland or skin primaries.

- Patients with recurrent head and neck cancer treated previously with chemotherapy,
radiation or immunotherapy.

- Any history of a severe hypersensitivity reaction to any monoclonal antibody.

- Any history of allergy to the study drug components.

- Participants with a personal or family (i.e., in a first-degree relative) history or
presence of cytochrome b5 reductase deficiency (previously called methemoglobin
reductase deficiency) or other diseases that puts them at risk of methemoglobinemia.
All participants will be screened for methemoglobin levels prior to randomization.

- Participants with a history of G6PD deficiency or other congenital or autoimmune
hemolytic disorders. All participants will be screened for G6PD deficiency prior to
randomization.

- Participants with history of serotonin syndrome.

- Participants with active interstitial lung disease (ILD)/pneumonitis or history of
ILD/ pneumonitis requiring steroids.

- Prior treatment with BMS-986205 or any other IDO1 inhibitors.

- Quantitative or qualitative G6PD assay results suggesting underlying G6PD deficiency.

- Blood methemoglobin > upper limit of normal (ULN), assessed in an arterial or venous
blood sample or by co-oximetry.

- History or presence of hypersensitivity or idiosyncratic reaction to methylene blue.

- History of allergy or hypersensitivity to any study treatment components, specifically
to that of BMS-986205.

- Any concurrent malignancies; exceptions include- basal cell carcinoma of the skin,
squamous cell carcinoma of the skin, superficial bladder cancer or in situ cervical
cancer that has undergone potentially curative therapy. Patients with a history of
other prior malignancy must have been treated with curative intent and must have
remained disease-free for 2 years post-diagnosis.

- Any diagnosis of immunodeficiency or receiving systemic steroid therapy (> 10 mg daily
prednisone equivalents) or any other form of immunosuppressive therapy within 14 days
of initiation of therapy.

- Patients that have an active autoimmune disease requiring systemic treatment within
the past 3 months or a documented history of clinically severe autoimmune disease, or
a syndrome that requires systemic steroids (> 10 mg daily prednisone equivalents) or
immunosuppressive agents. Subjects with vitiligo, type I diabetes mellitus, or
resolved childhood asthma/atopy would be an exception to this rule. Subjects that
require intermittent use of bronchodilators or local steroid injections would not be
excluded from the study. Subjects with hypothyroidism stable on hormone replacement or
Sjogren's syndrome will not be excluded from the study.

- Patients must not be receiving any other investigational agents.

- Patients with uncontrolled intercurrent illnesses including, but not limited to an
active infection requiring systemic therapy or a known psychiatric or substance abuse
disorder(s) that would interfere with cooperation with the requirements of the trial.

- Patients must not be pregnant or breastfeeding.

- Patients with a known human immunodeficiency virus infection (HIV 1/2 antibodies) or
acquired immunodeficiency syndrome (HIV/AIDS), active hepatitis B (e.g., hepatitis B
surface antigen [HBsAg] reactive) or hepatitis C (e.g., hepatitis C virus [HCV]
ribonucleic acid [RNA] [qualitative] is detected).

- Patients with any evidence of current interstitial lung disease (ILD) or pneumonitis.

- Patients with prior history of ILD or non-infectious pneumonitis that required
steroids.

- Patients who have received a live vaccine within 30 days of the planned start of study
therapy.