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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01243346
Other study ID # ARO-BRE-002
Secondary ID
Status Completed
Phase Phase 2
First received
Last updated
Start date April 2011
Est. completion date July 2014

Study information

Verified date June 2018
Source Arog Pharmaceuticals, Inc.
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This Phase II study is designed to evaluate the antitumor efficacy and pharmacokinetics of crenolanib (CP-868,596) in patients with D842-related mutant metastatic GIST.


Description:

Crenolanib (CP-868,596) is an orally bioavailable, selective inhibitor of PDGFR receptor tyrosine kinase with IC50s of 0.4 ng/mL and 0.8 ng/mL for PDGFRα and PDGFRβ, respectively.

In preclinical models of cell lines with the D842V mutation in the PDGFRA gene, crenolanib (CP-868,596) blocked phosphorylation of PDGFRα at nanomolar concentrations, suggesting that it may provide a clinical benefit to patients with D842V mutant GIST.

In addition, crenolanib was also active in inhibiting phosphorylation of cell lines with two point mutations (double mutants) PDGFRA V561D + D842V and PDGFRA T674I + D842V.


Recruitment information / eligibility

Status Completed
Enrollment 20
Est. completion date July 2014
Est. primary completion date July 2014
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria

- Male or female, of any racial or ethnic group

- Age 18 years or older

- Life expectancy of greater than 12 weeks

- Patient able and willing to provide informed consent

- Normal liver function, defined as AST and ALT =2.5x ULN, and Total Bilirubin = 2x ULN.

- Total creatinine = 1.5x ULN

- ECOG Performance Status 0 - 2 (Appendix II)

- Patients must have histologically or cytologically confirmed GIST with a D842-related mutation or deletion on the PDGFRA gene

- Patients must have measurable disease, defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded) as >20 mm with conventional techniques or as >10 mm with spiral CT scan. See Section 10.1.2 for the evaluation of measurable disease.

- Patients must have recovered from any prior therapy and completed the minimum of, either 5 half-lives of prior therapy or 2 weeks must have elapsed since prior treatment

Exclusion Criteria

- Patient unable to provide informed consent

- ECOG Performance status > 2

- Any concurrent anticancer therapy, immunotherapy, or hormonal therapy.

- Any other investigational agents taken within 2 weeks of start of study drug or if study drug will commence within 5 half-lives of prior therapy

- Patients with known or active Hepatitis B or C; liver cirrhosis.

- Patients with active fungal, viral, and bacterial infections

- Positive serum pregnancy test

- Pregnant or lactating women

- Patients on concomitant medications that induce or inhibit CYP3A4 (Appendix III)

- Patients with severe and/or uncontrolled concurrent medical disease that in the opinion of the investigator could cause unacceptable safety risks or compromise compliance with the protocol e.g. impairment of gastrointestinal (GI) function, or GI disease that may significantly alter the absorption of the study drugs

Study Design


Intervention

Drug:
Crenolanib besylate (CP-868,596-26), Dose: 140mg BID
Highly potent inhibitor of both PDGFR receptors alpha and beta

Locations

Country Name City State
United States Fox Chase Cancer Center Philadelphia Pennsylvania
United States Knight Cancer Institute, Oregon Health and Science University Portland Oregon

Sponsors (1)

Lead Sponsor Collaborator
Arog Pharmaceuticals, Inc.

Country where clinical trial is conducted

United States, 

References & Publications (1)

Heinrich MC, Griffith D, McKinley A, Patterson J, Presnell A, Ramachandran A, Debiec-Rychter M. Crenolanib inhibits the drug-resistant PDGFRA D842V mutation associated with imatinib-resistant gastrointestinal stromal tumors. Clin Cancer Res. 2012 Aug 15;18(16):4375-84. doi: 10.1158/1078-0432.CCR-12-0625. Epub 2012 Jun 27. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary The primary end-point is overall response rate To determine the response rate of patients with advanced D842V mutant GIST, when treated with Crenolanib (CP-868,596). Response will primarily be determined by RECIST criteria 1.5 years
Secondary Progression free survival rate To determine the progression free survival rate at 6 months in patients with advanced GIST with the D842V mutation in the PDGFRA gene, when treated with CP-868,596 (crenolanib). 6 months
Secondary Obtain toxicity information To obtain additional toxicity information in patients with advanced GIST with the D842V mutation in the PDGFRA gene. 1 year
Secondary PKPD analysis To obtain additional PK, pharmacodynamic and plasma inhibitory assay information in patients with advanced GIST with the D842V mutation in the PDGFRA gene. 1 year