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Phase I study of cetuximab plus U3-1565 in colorectal cancer with resistance to anti-EGFR antibody

Phase I study of cetuximab plus U3-1565 in colorectal cancer with resistance to anti-EGFR antibody - U3-1565-CRC P-I

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000013006
Enrollment
23
Registered
2014-03-01
Start date
2014-03-19
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Colorectal cancer

Interventions

Level1 First dose Cetuximab: 400 mg/m2 div day1 U3-1565: 24 mg/kg div day1 From second dose on Cetuximab: 250 mg/m2 div. day1,8 U3-1565: 16 mg/kg div day1 q2w Level0 First dose Cetuxim

Sponsors

St. Marianna University School of Medicine Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Histologically confirmed KRAS (EXON 2 codon12/13) wild-type colorectal adenocarcinoma 2) Unresectable colorectal cancer 3) Aged 20 years or over 4) ECOG Performance status (PS): 0, 1 5) 1 or more target lesions (RECIST ver 1.1) 6) Previous chemotherapy for unresectable colorectal cancer 1. received 5-FU 2. received oxaliplatin 3. received irinotecan 4. received cetuximab or panitumumab, and resistant to either 5. received 2 more regimens 7) Adequate organ function as evidenced by the following laboratory studies within 14 days prior to enrollment 1. Neutrophil count: 1,200/mm3 or above 2. Hemoglobin: 8.0 g/dL or above 3. Platelet count: 75000/mm3 or above 4. Total bilirubin: 2.0 mg/dL or less 5. AST (GOT): 100 IU/L or less 6. ALT (GPT): 100 IU/L or less 7. Serum creatinin: 2.0 mg/dL or less 8) No blood transfusion within 14 days prior to enrollment 9) Grade 1 or less of acute adverse events or recovered to the baseline before the previous treatment 10) Not pregnant in lactating female 11) Written infromed consent

Exclusion criteria

Exclusion criteria: 1) Any chemotherapy within 2 weeks prior to enrollment 2) Any surgery or radiation within 4 weeks prior to enrollment 3) Any investigatilnal drug within 4 weeks prior to enrollment 4) Previous administration of U3-1565 5) Hypersensitivity to U3-1565 or its additives 6) Metastasis to central nervous system 7) Pleural effusion, ascites or pericardial effusion under drainage 8) Other currently active malignancies excluding malignancies that are disease free for more than 3 years or carcinoma-in -situ deemed cured by adequate treatment 9) History of any severe medical condition 10) HBs Ag: positive, HCV Ab: positive 11) Continuous systemic steroids or immunosuppressant drug 12) Active bleeding 13) No contraception 14) No will or impossible to follow the protocol 15) Investigator considered the patients inappropriate to the trial.

Design outcomes

Primary

MeasureTime frame
Proportion of DLT(Dose limiting toxicity)

Secondary

MeasureTime frame
Pharmacokinetic parameters Proportion and severity of adverse events Response rate: RR Duration of response: DOR Disease control rate: DCR Progression free survival: PFS Overall survival: OS

Countries

Japan

Contacts

Public ContactTakako Nakajima

St. Marianna University School of Medicine Hospital Department of Medical Oncology

tnakajima@marianna-u.ac.jp0449778111

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026