PRIMARY OBJECTIVES:
I. To determine the safety and tolerability of the combination of ATR kinase inhibitor M6620
(M6620) and avelumab in patients with deoxyribonucleic acid (DNA) damage response (DDR)
deficient advanced solid tumors. (Arm A: M6620 + avelumab) II. To establish the maximum
tolerated dose (MTD) and recommended phase 2 dose (RP2D) of the combination of M6620 and
avelumab in patients with DDR deficient advanced solid tumors. (Arm A: M6620 + avelumab) III.
To confirm the safety and tolerability of the combination of nedisertib (M3814) and avelumab
in patients with DDR deficient advanced solid tumors. (Arm B: M3814 + avelumab)
SECONDARY OBJECTIVES:
I. To determine the clinical benefit of the combination as defined by clinical benefit rate
(CBR) - complete response [CR] + partial response [PR] + stable disease [SD] > 6 months (CR +
PR + SD > 6 months). (Arm A: M6620 + avelumab) II. To assess clinical benefit of the
combination as defined by objective response rate (ORR), overall survival (OS), and
progression free survival (PFS). (Arm A: M6620 + avelumab) III. To determine the clinical
benefit of the combination of M3814 and avelumab, as defined by CBR (CR + PR + SD > 6
months). (Arm B: M3814 + avelumab) IV. To assess clinical benefit of the combination as
defined by ORR, OS and PFS. (Arm B: M3814 + avelumab)
EXPLORATORY OBJECTIVES:
I. To evaluate clinical benefit of the combination of M6620 and avelumab based on specific
DDR aberrations. (Arm A: M6620 + avelumab) II. To evaluate clinical benefit of the
combination of M6620 and avelumab based on DDR gene expression signatures. (Arm A: M6620 +
avelumab) III. To evaluate the impact of treatment on programmed death ligand 1 (PD-L1)
expression and immune cell populations. (Arm A: M6620 + avelumab) IV. To assess potential
mechanisms of resistance by comparing pre- and on-treatment biopsies in responders and
non-responders. (Arm A: M6620 + avelumab) V. To evaluate the pharmacokinetic (PK) and
pharmacodynamic (PD) profile of M6620 in combination with avelumab in patients with DDR
deficient advanced solid tumors. (Arm A: M6620 + avelumab) VI. To evaluate clinical benefit
of the combination of M3814 and avelumab based on DDR gene expression signatures. (Arm B:
M3814 + avelumab) VII. To evaluate the impact of treatment on PD-L1 expression and immune
cell populations. (Arm B: M3814 + avelumab) VIII. To assess potential mechanisms of
resistance by comparing pre- and on-treatment biopsies in responders and non-responders. (Arm
B: M3814 + avelumab) IX. To evaluate the PK and PD profile of M3814 in combination with
avelumab in patients with DDR deficient advanced solid tumors. (Arm B: M3814 + avelumab)
OUTLINE: This is a phase I, dose-escalation study of ATR kinase inhibitor M6620, followed by
a phase II study. Patients are assigned to 1 of 2 arms.
ARM A: Patients receive avelumab intravenously (IV) over 60 minutes on days 1 and 15 and ATR
kinase inhibitor M6620 IV over 60 minutes on days 1, 8, 15, and 22. Cycles repeat every 28
days in the absence of disease progression or unacceptable toxicity.
ARM B: Patients receive avelumab IV over 60 minutes on days 1 and 15 and nedisertib orally
(PO) twice daily (BID) on days 1-28. Cycles repeat every 28 days in the absence of disease
progression or unacceptable toxicity.
After completion of study treatment, patients are followed up at 60 and 90 days, then every
12 weeks for 1 year.
Inclusion Criteria:
- Subjects must have histologically confirmed malignancy that is metastatic or
unresectable and for which standard curative measures do not exist or are no longer
effective
- Subjects will be eligible for this study based on the presence of actionable
aberrations in one or more of the following DNA damage response (DDR) genes: ARID1A,
ATM, ATR, ATRX, BAP1, BARD1, BRCA1/2, BRIP1, CDK12, CHEK2, FANCA, FANCC, FANCD2,
FANCE, FANCF, FANCM, MRE11A, MSH2, NBN (NBS1), PALB2, RAD51, RAD51C, RAD51D, SMARCB1,
and VHL, or other related genes at the discretion of the principal investigator in
consultation with the MD Anderson Cancer Center Institute or Personalized Cancer
Therapy Precision Oncology Decision Support (PODS) group. Variant interpretation for
actionability will be performed by PODS
- The collection of archival tumor tissue (within 1 year prior to study enrollment) will
be mandatory. Tumor biopsies on cycle 1 day 15 will be mandatory, all other biopsy
time points are not mandatory but will be strongly encouraged where feasible. These
include at baseline and at disease progression
- Subjects must have received at least 1 line of systemic therapy in the
advanced/metastatic setting. Subjects with diseases without known effective options,
and subjects who had declined standard of care therapy prior to study introduction are
also eligible
- Subjects must have measurable disease per Response Evaluation Criteria in Solid Tumors
(RECIST) version (v) 1.1, or patients may have bone metastatic disease evaluable by
Prostate Cancer Working Group 3 (PCWG3) for subjects with metastatic
castration-resistant prostate cancer (CRPC), or according to tumor evaluation criteria
best suited and accepted for the tumor type to be evaluated
- Subjects must have an Eastern Cooperative Oncology Group (ECOG) performance status 0-1
- Subjects must have a life expectancy >= 12 weeks
- Absolute neutrophil count >= 1.5 x 10^9/L
- Platelets >= 100 x 10^9/L
- Hemoglobin >= 9 g/dL or =< 5.6 mmol/L
- Total bilirubin =< 1.5 X the institutional upper limit of normal (ULN)
- Aspartate aminotransferase (AST) serum glutamic-oxaloacetic transaminase (SGOT)/
alanine aminotransferase (ALT) serum glutamic-pyruvic transaminase (SGPT) =< 2.5 X
institutional ULN or =< 5 X institutional ULN in the presence of liver metastases
- Serum creatinine =< 2 X ULN or estimated creatinine clearance >= 30 mL/min according
to the Cockcroft-Gault formula
- Female patients of childbearing potential must have a negative serum or urine
pregnancy test at screening (and again at baseline just prior to first administration
of study drugs)
- Female patients of non-childbearing potential must meet at least 1 of the following
criteria:
- Achieved postmenopausal status, defined as follows: cessation of regular menses
for at least 12 consecutive months, with no alternative pathological or
physiological cause, and have a serum follicle-stimulating hormone (FSH) level
confirming the postmenopausal state
- Have undergone a documented hysterectomy and/or bilateral oophorectomy
- Have medically confirmed ovarian failure All other female patients (including
female patients with tubal ligation) are considered to be of childbearing
potential
- Women of childbearing potential and fertile men must agree to use adequate
contraception when sexually active from signing of the informed consent form for the
full study until at least 6 months after the last study drug administration. Patients
must agree to utilize 2 reliable and acceptable methods of contraception
simultaneously. A man is considered fertile after puberty unless permanently sterile
by bilateral orchiectomy. Men taking part in this study are advised not to father a
child during and up to 6 months after treatment; prior to treatment, advice should be
sought for conserving sperm due to the chance of irreversible infertility as a
consequence of treatment. Female partners of childbearing potential from male study
patients have to use adequate contraception / birth control between signing of the
informed consent and 6 months after the last administration of the study drug if the
male study patient is not sterilized. The investigator or a designated associate is
requested to advise the patient how to achieve highly effective birth control. Highly
effective (failure rate of less than 1% per year) contraception methods, when used
consistently and correctly, include:
- Combined (estrogen and progestin containing: oral, intravaginal, transdermal) and
progestin-only (oral, injectable, implantable) hormonal contraception associated
with inhibition of ovulation
- Intra-uterine device or intrauterine hormone-releasing system
- Bilateral tubal occlusion or vasectomized partner (provided that partner is the
sole sexual partner and has received medical assessment of the surgical success)
- Sexual abstinence (reliability to be evaluated in relation to the duration of the
clinical trial and the preferred and usual lifestyle of the patient) Male
patients with a female partner of reproductive potential must use a condom and
ensure that an additional form of contraception is also used during treatment and
until 6 months after last study drug administration. Patients must agree to
utilize 2 reliable and acceptable methods of contraception simultaneously
- Evidence of a personally signed and dated informed consent document indicating that
the patient has been informed of all pertinent aspects of the study
- Willing and able to comply with scheduled visits, treatment plan, laboratory tests,
and other procedures
Exclusion Criteria:
- Anticancer systemic therapy or radiotherapy within 4 weeks or 5 half-lives, whichever
is shorter prior to starting the study agents. Prior palliative radiotherapy to
metastatic lesion(s) is permitted, ,provided it has been completed 2 weeks prior to
study enrollment, and no clinically significant toxicities are expected (e.g.,
mucositis, esophagitis)
- Known symptomatic brain metastases requiring steroids. Patients with previously
treated diagnosed brain metastases are eligible if they have completed their treatment
and have recovered from the acute effects of radiation therapy or surgery prior to
study enrollment, have discontinued corticosteroid treatment for these metastases for
at least 4 weeks and are neurologically stable
- Current use of immunosuppressive medication at the time of study enrollment, EXCEPT
for the following permitted steroids:
- Intranasal, inhaled, topical steroids, eye drops, or local steroid injection
(e.g., intra-articular injection)
- Systemic corticosteroids at physiologic doses =< 10 mg/day of prednisone or
equivalent
- Steroids as premedication for hypersensitivity reactions (e.g. computed
tomography (CT) scan premedication)
- Subjects who had major surgery within 4 weeks prior to study enrollment
- Known prior severe hypersensitivity to investigational products or any component in
their formulations, including known severe hypersensitivity reactions to monoclonal
antibodies (National Cancer Institute [NCI] Common Terminology Criteria for Adverse
Events [CTCAE] v5 grade >= 3)
- Active infection requiring systemic therapy
- Known history of immune-mediated colitis, inflammatory bowel disease, pneumonitis, and
pulmonary fibrosis
- Active or prior autoimmune disease that may deteriorate when receiving an
immunostimulatory agent. Patients with type I diabetes, vitiligo, psoriasis, or hypo-
or hyperthyroid disease not requiring immunosuppressive treatment are eligible
- Prior organ transplantation including allogenic stem cell transplantation
- Diagnosis of myelodysplastic syndrome (MDS)
- Vaccination within 4 weeks of study enrollment and while on trial is prohibited except
for the administration of inactivated vaccines
- Clinically significant (i.e., active) cardiovascular disease: cerebral vascular
accident/stroke (< 6 month prior to enrollment), myocardial infarction (< 6 months
prior to enrollment), unstable angina, congestive heart failure (>= New York Heart
Association Classification class II) or a serious cardiac arrhythmia requiring
medication
- Other acute or chronic medical or psychiatric conditions including but not limited to
recent (within the past year) or active suicidal ideation or behavior or laboratory
abnormality that may increase the risk associated with study participation or
investigational product administration or may interfere with the interpretation of
study results, and in the judgement of the Investigator, would make the patient
inappropriate for entry into this study
- Pregnant female patients, breastfeeding female patients, fertile male patients, and
female patients of childbearing potential who are unwilling or unable to use 2 highly
effective methods of contraception as outlined in this protocol for the duration of
the study, and for at least 30 days after the last dose of avelumab and at least 60
days after the last dose of M6620 or M3814, whichever is later for the individual
patient
- Hepatitis B virus (HBV) or hepatitis C virus (HCV) infection at screening (positive
HBV surface antigen or HCV ribonucleic acid (RNA) if anti-HCV antibody screening test
is positive)
- Known history of testing positive for human immunodeficiency virus (HIV) or known
acquired immune deficiency syndrome (AIDS)
- Known additional malignancy that is active and/or progressive requiring treatment;
exceptions include basal cell or squamous cell skin cancer, in situ bladder cancer, or
other cancer for which the patient has been disease-free for >= 2 years
- Persisting toxicity related to prior therapy (NCI CTCAE v4 grade > 1); however,
alopecia and sensory neuropathy grade =< 2, or other grade =< 2 AEs not constituting a
safety risk, based on the investigator's judgement, are acceptable
- Subjects receiving treatment with strong inhibitors or inducers of CYP3A4 that cannot
be discontinued before start of investigational treatment and for the duration of
study