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Phase I

A Phase I Study of M6620 (VX-970) in Combination With Cisplatin and XRT in Patients With Locally Advanced HPV (-) Head and Neck Squamous Cell Carcinoma (HNSCC; SDC 10060121)

  • Study HIC#:2000022814
  • Last Updated:07/15/2021

This phase I trial studies the side effects and best dose of ATR kinase inhibitor M6620 (M6620) when given together with cisplatin and radiation therapy in treating patients with human papillomavirus negative (HPV) (-) head and neck squamous cell carcinoma that has spread from where it started to nearby tissue or lymph nodes. ATR kinase inhibitor M6620 may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as cisplatin, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Radiation therapy uses high energy x-rays to kill tumor cells and shrink tumors. Giving ATR kinase inhibitor M6620 together with cisplatin and radiation therapy may work better in treating patients with locally advanced HPV-negative head and neck squamous cell carcinoma.

  • Start Date09/30/2020
  • End Date09/12/2021

Trial Purpose and Description


I. Assess the safety and tolerability of M6620 (VX-970) when administered along with weekly cisplatin and radiation therapy (XRT) in patients with locoregionally advanced HPV (-) head and neck squamous cell carcinoma (HNSCC).

II. Establish the recommended phase 2 dose (RP2D) of the combination.


I. Characterize the pharmacokinetic (PK) profile of M6620 (VX-970). II. Assess for potential drug-drug interaction between M6620 (VX-970) and aprepitant.

III. To observe and record anti-tumor activity. IV. To assess the rate of complete metabolic response (CMR) at 12 weeks post completion of chemoradiation using 18 fluorodeoxyglucose (FDG) positron emission tomography (PET) scans.

V. To collect archival tumor material for retrospective analysis of association between tissue-based biomarkers and clinical outcome.

OUTLINE: This is a dose-escalation study of ATR kinase inhibitor M6620.

Patients receive ATR kinase inhibitor M6620 intravenously (IV) over 60 minutes on day -7 and then weekly on day 2 and cisplatin IV over 30-60 minutes weekly on day 1. Patients also undergo radiation therapy once daily, 5 days a week. Treatment continues for up to 7 weeks in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up for 30 days, every 2 weeks for 3 months, and then every 3 months for 2 years.

Eligibility Criteria

Inclusion Criteria:

  • Patients must have histologically or cytologically confirmed head and neck squamous cell cancer (HNSCC) including paranasal sinus cancers but excluding nasopharyngeal carcinomas
  • Clinical staged III or IV HNSCC that is not amenable to surgical resection
  • Patients with primary oropharynx HNSCC must be HPV (-) according to local institutional definition using either p16 immunohistochemistry or HPV testing
  • Carcinoma of the neck of unknown primary site origin (regardless of HPV/p16 status) is eligible
  • Eastern Cooperative Oncology Group (ECOG) performance status =< 2 (Karnofsky >= 60%)
  • Life expectancy of greater than 3 months
  • Patients must have measurable disease, defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded for non-nodal lesions and short axis for nodal lesions) as >= 20 mm (>= 2 cm) with conventional techniques or as >= 10 mm (>= 1 cm) with spiral computed tomography (CT) scan, magnetic resonance imaging (MRI), or calipers by clinical exam
  • Leukocytes >= 3,000/mcL
  • Absolute neutrophil count >= 1,500/mcL
  • Platelets >= 100,000/mcL
  • Total bilirubin within normal institutional limits
  • Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) =< 2.5 x institutional upper limit of normal
  • Creatinine within normal institutional limits OR creatinine clearance >= 60 mL/min/1.73 m^2 for patients with creatinine levels above institutional normal
  • Women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation; should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately; men treated or enrolled on this protocol must also agree to use adequate contraception prior to the study, for the duration of study participation, and 6 months after completion of M6620 (VX-970) administration
  • Ability to understand and the willingness to sign a written informed consent document
  • Women of childbearing potential who are sexually active should be willing and able to use medically acceptable forms of contraception throughout the treatment phase of the trial and for up to 6 months following the last administration of study treatment; men who are sexually active must be willing and able to use medically acceptable forms of contraception throughout the treatment phase of the trial and for 6 months after completion of M6620 (VX-970) administration

Exclusion Criteria:

  • Patients with nasopharyngeal carcinoma, skin squamous cell carcinoma (SCC), and salivary gland carcinomas are not eligible
  • Patients who are receiving adjuvant chemoradiation after surgical resection of the primary site of disease
  • Patients who have had chemotherapy or radiotherapy within 4 weeks (6 weeks for nitrosoureas or mitomycin C) prior to entering the study or those who have not recovered from adverse events due to agents administered more than 4 weeks earlier
  • Patients who are receiving any other investigational agents
  • Patients on tacrolimus or any other immunosuppressants with significant interaction with cisplatin
  • Patient who requires live vaccine administration
  • Patients with known brain metastases should be excluded from this clinical trial
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to M6620 (VX-970) or cisplatin
  • Prior systemic chemotherapy for the current cancer (prior chemotherapy for a different cancer is allowed)
  • Prior receipt of radiotherapy that would result in overlap of the new and old radiation therapy fields
  • Uncontrolled intercurrent illness including, but not limited to:
    • Ongoing or active infection requiring intravenous antibiotics at the time of treatment initiation
    • Symptomatic congestive heart failure (requiring hospital stay within the last 6 months)
    • Myocardial infarction within the last 6 months
    • Unstable angina pectoris, cardiac arrhythmia
    • Psychiatric illness/social situations that would limit compliance with study requirements
  • Pregnant women are excluded from this study; breastfeeding should be discontinued if the mother is treated with M6620 (VX-970)
  • Human immunodeficiency virus (HIV)-positive patients with well-controlled disease, as determined by CD4 count and viral load, who are on antiretroviral therapy that does not contain a strong inducer or inhibitor of CYP3A4 are allowed on trial; HIV-positive patients on combination antiretroviral therapy with strong inducers or inhibitors of CYP3A4 are ineligible; patients with poorly controlled HIV are not eligible
  • Definitive clinical or radiographic evidence of distant metastasis or adenopathy below the clavicles
  • Concomitant administration with strong inhibitors or inducers of CYP3A4 should be avoided

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