About this trial
The primary purpose of this study is to evaluate the safety and tolerability, determine the maximally tolerated dose (MTD) and/or recommended Phase 2 dose(s) (RP2D) of PT0511 in adult participants with solid tumors as monotherapy and in combination with cetuximab in participants with colorectal cancer (CRC).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Men or women less than or equal to (>=) 18 years of age
Histologically or cytologically confirmed advanced or metastatic solid malignancy
Participant has a pathologically documented, locally advanced or metastatic malignancy with any KRAS mutation or wild-type (WT) KRAS amplification identified through molecular testing using a Clinical Laboratory Improvement Amendments (CLIA) certified, validated institutional or commercial test
Participant must have received at least 1 and no more than 4 prior systemic therapies or be intolerant or ineligible for available therapies known to provide clinical benefit
Disqualifiers
Active brain metastasis or carcinomatous meningitis. If participants have had brain metastases resected or have received radiation therapy, they may be eligible if: (1) study treatment begins at least 4 weeks from the end of brain-specific therapy, (2) residual neurological symptoms Grade <=2, (3) currently on stable doses of corticosteroids, and (4) pre-study brain MRI documents no new/worsening brain lesions
Malignancy treated with curative intent and with no known active disease present >=2 years before enrolment and felt to be at low risk for recurrence by the investigator
Basal or squamous cell carcinoma of the skin, in situ cervical cancer, early -stage endometrial cancer that has been definitively treated, superficial bladder cancer, Gleason 6/7 treated prostate cancer, and ductal carcinoma in situ or lobular carcinoma in situ of the breast
Unresolved toxicities from prior anti-cancer therapies. Participants with prior endocrine replacement therapies are eligible for entry even if administered to treat endocrine deficiency due to the prior anti-cancer therapy
Trial design
Sequential
Treatments tested in this trial
PT0511
DrugIntravenous infusion.
Cetuximab
DrugIntravenous infusion.
Treatment groups
9
Treatment groupsSee each treatment group below.
Trial outcomes
Primary outcomes
Number of Participants with Dose-limiting Toxicities (DLT)
Number of Participants with Treatment-Emergent Adverse Events (TEAEs)
Number of Participants with TEAEs Leading to Treatment Interruptions, Dose Reductions and Permanent Discontinuations
Secondary outcomes
Cmax/C0: Maximum Blood Concentration (Cmax) and/or Concentration at Time 0 (C0) of PT0511
Tmax: Time to Reach Cmax of PT0511
AUC0-t: Area Under the Curve From time 0 to the time of the Last Quantifiable Concentration of PT0511
t1/2: Terminal Elimination Half-life of PT0511
Sponsors and contacts
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