Breast Cancer Clinical Trial
Official title:
Multidrug Resistance Molecular Target Analysis of Human Samples Collected in Clinical Trials Performed Outside of the Intramural National Cancer Institute
Verified date | February 8, 2018 |
Source | National Institutes of Health Clinical Center (CC) |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
Background:
Resistance to cancer chemotherapy develops in patients, rendering certain treatments
ineffective. Despite much research, the prevailing cause of drug resistance is not known.
One mechanism for drug resistance involves a protein called P-glycoprotein, or Pgp, which
reduces the effectiveness of cancer treatments by "pumping" anti-cancer drugs out of tumor
cells where they are supposed to work against the disease.
Objectives:
To identify and evaluate more thoroughly the roles of Pgp and other substances in mediating
drug resistance.
Eligibility:
Patients enrolled in clinical trials of cancer therapies at the Children's Hospital of
Pittsburgh; Cancer Centers of Carolinas; Arizona Clinical Research Center; University of
Copenhagen; and Herlev Hospital, Copenhagen who have consented to the use of blood, tissue,
or tumor samples for laboratory studies.
Design:
Blood, tumor, and tissue samples are collected from participants and sent to the NCI for
various laboratory analyses.
...
Status | Completed |
Enrollment | 325 |
Est. completion date | February 8, 2018 |
Est. primary completion date | |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 99 Years |
Eligibility |
- INCLUSION CRITERIA: Any patients entered on approved trials of cancer therapeutics at Children's Hospital of Pittsburgh, Herlev Hospital, and the University of Copenhagen outside of the intramural NCI are eligible for inclusion, provided that they have consented to tumor studies in the original consent forms. EXCLUSION CRITERIA: None anticipated at this time. |
Country | Name | City | State |
---|---|---|---|
United States | Childrens Hospital, Pittsburgh | Pittsburgh | Pennsylvania |
Lead Sponsor | Collaborator |
---|---|
National Cancer Institute (NCI) |
United States,
Baer MR, George SL, Dodge RK, O'Loughlin KL, Minderman H, Caligiuri MA, Anastasi J, Powell BL, Kolitz JE, Schiffer CA, Bloomfield CD, Larson RA. Phase 3 study of the multidrug resistance modulator PSC-833 in previously untreated patients 60 years of age and older with acute myeloid leukemia: Cancer and Leukemia Group B Study 9720. Blood. 2002 Aug 15;100(4):1224-32. — View Citation
Gottesman MM, Fojo T, Bates SE. Multidrug resistance in cancer: role of ATP-dependent transporters. Nat Rev Cancer. 2002 Jan;2(1):48-58. Review. — View Citation
Robey R, Bakke S, Stein W, Meadows B, Litman T, Patil S, Smith T, Fojo T, Bates S. Efflux of rhodamine from CD56+ cells as a surrogate marker for reversal of P-glycoprotein-mediated drug efflux by PSC 833. Blood. 1999 Jan 1;93(1):306-14. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Expression of MDR1/P-glycoprotein and related drug resistance proteins | Upon receipt and processing of specimen |
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