CR-001 in Adult Participants With Locally Advanced or Metastatic Solid Tumors
ASCEND
A Phase 1/2, Multicenter, Open-label, Dose Escalation and Dose Expansion Study to Evaluate the Safety, Pharmacokinetics, Pharmacodynamics, and Antitumor Activity of CR-001 in Adult Participants With Locally Advanced or Metastatic Solid Tumors
2 other identifiers
interventional
290
2 countries
10
Brief Summary
The purpose of this study is to determine the safety and tolerability of monotherapy CR-001 and identify the maximum tolerated dose (MTD), and/or optimal biologic dose and Recommended Phase 2 Dose(s) (RP2D) in participants with locally advanced or metastatic solid tumors.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_1
Started Feb 2026
Typical duration for phase_1
10 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
January 8, 2026
CompletedFirst Posted
Study publicly available on registry
January 13, 2026
CompletedStudy Start
First participant enrolled
February 17, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
February 1, 2029
ExpectedStudy Completion
Last participant's last visit for all outcomes
February 1, 2029
May 6, 2026
May 1, 2026
3 years
January 8, 2026
May 4, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (5)
Dose Escalation - Incidence and nature of dose-limiting toxicities
Per cohort
From the first dose of study drug up until approximately 1 month
Dose Escalation - Characterization of the maximum tolerated dose, if applicable
Per Cohort
From the first dose of study drug up until approximately 1 month
All parts - Incidence, nature, and severity of treatment emergent adverse events (TEAEs) and treatment - emergent serious adverse events
Events graded according to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE)
From the first dose of study drug until 90 days after the last dose of study drug
All parts - Incidence and severity of TEAEs leading to dose modifications
From the first dose of study drug until 90 days after the last dose of study drug
All parts - Incidence and severity of TEAEs leading to treatment discontinuation
From the first dose of study drug until 90 days after the last dose of study drug
Secondary Outcomes (15)
All parts - Determination of recommended Phase 2 dose(s)
From the first dose of study drug until 90 days after the last dose of study drug
All parts - Serum CR-001 pharmacokinetic parameters
Predose until up to approximately 36 months
All parts - Serum CR-001 pharmacokinetic parameters
Predose until up to approximately 36 months
All parts - Serum CR-001 pharmacokinetic parameters
Predose until up to approximately 36 months
All parts - Serum CR-001 pharmacokinetic parameters
Predose until up to approximately 36 months
- +10 more secondary outcomes
Study Arms (4)
CR-001 Dose escalation
EXPERIMENTALEscalating dose levels of CR-001 to define the maximum tolerated dose of CR-001 in participants with locally advanced or metastatic solid tumors who are refractory to or unable to tolerate standard of care treatment, or for whom standard of care treatment is unavailable
CR-001 Backfill
EXPERIMENTALEscalating dose levels of CR-001 Indication-specific cohort populations will be tested
CR-001 Dose Optimization Cohort X
EXPERIMENTALmonotherapy dose level (DL)-X Indication-specific cohort populations will be tested
CR-001 Dose Optimization Cohort Y
EXPERIMENTALmonotherapy DL-Y Indication-specific cohort populations will be tested
Interventions
Intravenous Infusion
Eligibility Criteria
You may qualify if:
- Life expectancy ≥ 3 months
- Eastern Cooperative Oncology Group (ECOG) performance status score of 0 - 1
- Adequate organ function and hematologic reserve based on laboratory parameters
- Have measurable disease defined by RECIST v1.1
- For Backfill and Dose Optimization: Willingness to provide recent archival tumor tissue sample or willingness to undergo biopsy
- For dose escalation or backfill: progressing from, intolerant to, or ineligible for (due to unavailability or contraindication) local standard of care therapies and have one of the following locally advanced or metastatic tumor types:
- Hepatocellular carcinoma
- Biliary tract cancer
- Endometrial carcinoma
- Cervical cancer
- Ovarian cancer
- Gastric or gastroesophageal cancer
- Colorectal cancer
- Non-small cell lung cancer
You may not qualify if:
- Has malignancies other than disease under study within the past 3 years
- Has conditions requiring treatment with clinically significant or increasing doses of systemic steroid therapy
- Has not adequately recovered from recent major surgery
- Has ongoing clinically significant toxicity related to prior therapy
- Has active central nervous system (CNS) metastases
- Has active autoimmune disease requiring systemic therapy in the past 2 years (replacement therapy is permitted)
- Has a history of serious Grade ≥ 3 immune-related adverse event (irAE)
- Has a history of noninfectious pneumonitis/interstitial lung disease
- Has an active severe infection
- Has received a live or attenuated vaccine within 30 days of the first dose
- Has undergone prior allogeneic stem cell or solid organ transplantation
- Has protocol-specified events related to gastrointestinal perforation, surgery, wound healing complications, and bleeding
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (10)
Clinical Study Site
Denver, Colorado, 80218, United States
Clinical Study Site
Orlando, Florida, 32827, United States
Clinical Study Site
Sarasota, Florida, 34236, United States
Clinical Study Site
Grand Rapids, Michigan, 49546, United States
Clinical Study Site
Columbus, Ohio, 43210, United States
Clinical Study Site
Nashville, Tennessee, 37203, United States
Clinical Study Site
Dallas, Texas, 75230, United States
Clinical Study Site
San Antonio, Texas, 78229, United States
Clinical Study Site
West Valley City, Utah, 84119, United States
Clinical Study Site
South Brisbane, Queensland, 4101, Australia
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Brad Sumrow, MD
Crescent Biopharma, Inc.
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 1
- Allocation
- NON RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SEQUENTIAL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
January 8, 2026
First Posted
January 13, 2026
Study Start
February 17, 2026
Primary Completion (Estimated)
February 1, 2029
Study Completion (Estimated)
February 1, 2029
Last Updated
May 6, 2026
Record last verified: 2026-05