TRC102 and Temozolomide for Relapsed Solid Tumors and Lymphomas

Background:

• Base excision repair (BER) of deoxyribonucleic acid (DNA) repair pathway has been implicated in resistance to both alkylating and antimetabolite chemotherapy.
• TRC102 (methoxyamine hydrochloride (HCl) acts through a novel mechanism to inhibit BER and has demonstrated the ability to potentiate the activity of the alkylating agent temozolomide (TMZ), in vitro and in vivo. We hypothesize that TRC102 can be safely co-administered with TMZ and would potentiate DNA damage caused by TMZ, resulting in antitumor responses.
• Based on responses measured during the Phase I portion of the trial, we will further explore the efficacy of this combination in patients with metastatic colon carcinoma, non-small cell lung cancer (NSCLC), and granulosa cell ovarian cancer

Primary Objective:

• To establish the safety, tolerability, and maximum tolerated dose (MTD) of oral TRC102 in combination with oral TMZ in patients with refractory solid tumors
• Evaluate the pharmacokinetic (PK) profile of oral TRC102 when administered in combination with TMZ.
• To explore the response rate of this combination in patients with colon cancer, NSCLC, and granulosa cell ovarian cancer

Secondary Objective:

-To explore the progression free survival rate of this combination in patients with colon cancer, NSCLC, and granulosa cell ovarian cancer

Exploratory Objectives:

• Investigate tumor genomic and transcriptomic alterations potentially associated with sensitivity and/or the development of resistance to TRC102 and temozolomide.
• Determine the effects of the study treatment on the level of histone gamma-H2A histone family member X (H2AX) in circulating tumor cells (CTCs) and tumor and correlate the gamma-H2AX response in tumor and CTCs
• Determine the effects of the study treatment on the levels of cleaved caspase 3, epithelial- mesenchymal transition, and abdominoperineal excision (APE) in tumor and CTCs
• Determine and characterize the effects of study treatment on erythrocytes
• Characterize the clinical presentation of hemolysis observed in earlier study subjects and explore the possible mechanisms

Eligibility:

• Phase I: histologically confirmed solid tumors that have progressed on standard therapy known to prolong survival or for which no standard treatment options exist
• Phase II: histologically confirmed adenocarcinoma of the colon post at least two lines of therapy, NSCLC post at least two lines of therapy, or granulosa cell ovarian cancer post at least one line of therapy
• No major surgery, radiation, or chemotherapy within 4 weeks prior to entering the study
• Adequate organ function
• Healthy adult volunteers greater than or equal to 18 years of age will be consented to donate research blood

Please note: healthy adult volunteers will no longer be recruited to provide blood for this study as we will no longer perform the hemolysis analysis.

Study Design: Phase I

• This is an open-label Phase I trial; traditional 3+3 design.
• Oral TRC102 and oral TMZ will be administered daily, days 1-5 in 28-day cycles
• Once the MTD is established, up to 15 additional patients will be enrolled at the MTD to further evaluate that dose for PK and pharmacodynamic (PD) endpoints for evidence of DNA damage and apoptosis.
• During the escalation phase, tumor biopsies will be optional. During the expansion phase, (once MTD is reached), mandatory paired tumor biopsies will be pursued in the 15 additional patients enrolled to further evaluate progressive disease (PD) endpoints.

Phase II

• This is a 3-arm Simon 2-stage design trial evaluating independently the response rate of patients with colon, NSCLC, and granulosa cell ovarian cancer.
• Patients with a body surface area (BSA) of greater than or equal to 1.6 m(2) will receive 125 mg of TRC 102 and 150 mg/m(2) of TMZ PO qday x 5 every 28 days (DL6). Patients with a BSA of <1.6 m(2) will receive 100 mg of TRC 102 and 150 mg/m(2) of TMZ by mouth (PO) every (q)day x 5 every 28 days (Dose Level (DL)5). Each cycle will be 28 days.
• The accrual ceiling for the Phase II portion is 75 patients.
• Mandatory paired tumor biopsies will be pursued to further evaluate PD endpoints.

• Eligibility Criteria (Patients)
• Phase I: histologically confirmed solid tumors that have progressed on standard therapy known to prolong survival or for which no standard treatment options exist.
• Phase II: histologically confirmed colorectal adenocarcinoma post at least two lines of therapy, non-small cell lung cancer (NSCLC) post at least two lines of therapy, or granulosa cell ovarian cancer post at least one line of therapy. Patients must have measurable disease.
• Age greater than18 years. Because no dosing or adverse event data are currently available on the use of methoxyamine hydrochloride (TRC102) in combination with Temozolomide (TMZ) in patients less than 18 years of age, children are excluded from this study.
• Patients enrolling in the expansion cohorts must have disease amenable to biopsy and be willing to undergo pre-and post-treatment biopsies.
• Eastern Cooperative Oncology Group (ECOG) performance status less than 2 (Phase I), less than or equal to 1(Phase II).
• Life expectancy of greater than 3 months
• Patients must have normal organ and marrow function as defined below:
• Absolute neutrophil count greater than 1,500/mcL
• Hemoglobin greater than or equal to 10 g/dL without transfusion within 1 week prior to enrollment

Platelets greater than or equal to 100,000/mcL

Total bilirubin less than or equal to1.5 X institutional ULN

Aspartate aminotransferase (AST) serum glutamic oxaloacetic transaminase (SGOT)/alanine transaminase (ALT) serum glutamic-pyruvic transaminase (SGPT)(SGPT) less than or equal to 3 X institutional upper limit of normal; 5.0 x upper limit of normal (ULN) in cases of liver metastases

creatinine less than or equal to 1.5 X institutional ULN

OR

creatinine clearance greater than or equal to 60 mL/min/1.73 m(2) for patients with creatinine levels greater than 1.5 mg/dL

-The effects of study drug on the developing human fetus are unknown. For this reason, 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 and for at least 3 months after dosing with study drugs ceases. 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 3 months after completion of study drug administration.

• Patients must have completed any chemotherapy, radiation therapy, or biologic therapy greater than or equal to 4 weeks (or 5 half-lives, whichever is shorter) prior to entering the study (6 weeks for nitrosoureas or mitomycin C). Patients must be greater than or equal to 2 weeks since any prior administration of a study drug in a Phase 0 or equivalent study and greater than or equal to 1 week from palliative radiation therapy. Patients must have recovered to eligibility levels from prior toxicity or adverse events. Treatment with bisphosphonates is permitted.
• Patients must be able to swallow whole tablets or capsules; nasogastric or gastric (G)-tube administration is not allowed.
• Ability to understand and the willingness to sign a written informed consent document and to undergo tumor biopsies in the expansion phase.

Exclusion criteria

(Patients)

• Patients who are actively receiving any other investigational agents.
• Patients with active brain metastases or carcinomatous meningitis are excluded from this clinical trial. Patients with treated brain metastases, whose brain metastatic disease has remained stable for greater than or equal to 4 weeks without requiring steroid and anti-seizure medications are eligible to participate.
• Phase II only: No other prior malignancies are allowed except for the following:

• Adequately managed stage 0 (carcinoma in situ), I, or II basal cell or squamous cell carcinoma from which the patient is currently in complete remission.
• Any other cancer from which the patient has been disease-free for three years.
• Adequately managed stage I or II well differentiated thyroid or prostate cancer is also eligible, wherein the patient is not required to be in complete remission.
• Phase II only: patients with colorectal cancer with known MSI-high disease who have not previously been treated with immunotherapy or who have refused treatment with immunotherapy.
• History of allergic reactions attributed to compounds of similar chemical or biologic composition to TRC102 or TMZ.
• Uncontrolled intercurrent illness including, but not limited to, serious untreated infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.
• Pregnant women are excluded from this study because the effects of the study drugs on the developing fetus are unknown. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with the study drugs, breastfeeding should be discontinued prior to the first dose of study drug and women should refrain from nursing throughout the treatment period and for 3 months following the last dose of study drug.
• HIV-positive patients on combination antiretroviral therapy are ineligible because of possible pharmacokinetic (PK) interactions with TRC102.

(Healthy volunteer blood donors)

Please note: healthy adult volunteers will no longer be recruited to provide blood for this study as we will no longer perform the hemolysis analysis.

• Age greater than 18 years; hemoglobin greater than or equal to 12 g/dL; no history of bleeding problems; not taking aspirin or any medication that may affect erythrocyte biochemistry
• Willingness to sign the healthy volunteer informed consent form.