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GUCALP, Ayca; TOLANEY, Sara; STEARNS, Vered; DOANE, Ashley S; DANSO, Michael; MOYNAHAN, Mary Ellen; MOMEN, Lamia F; GONZALEZ, Joseph M; AKHTAR, Arooj; GIRI, Dilip D; PATIL, Sujata; FEIGIN, Kimberly N; ISAKOFF, Steven J; HUDIS, Clifford A; TRAINA, Tiffany A; INGLE, James N; LIU, Minetta C; CAREY, Lisa A; BLACKWELL, Kimberly; RUGO, Hope; NABELL, Lisle; FORERO, Andres
Clinical cancer research, 10/2013, Letnik: 19, Številka: 19Journal Article
Patients with hormone receptor-negative breast cancer generally do not benefit from endocrine-targeted therapies. However, a subset with androgen receptor (AR) expression is predicted to respond to antiandrogen therapies. This phase II study explored bicalutamide in AR-positive, estrogen receptor (ER), and progesterone receptor (PgR)-negative metastatic breast cancer. Tumors from patients with ER/PgR-negative advanced breast cancer were tested centrally for AR immunohistochemistry (IHC) > 10% nuclear staining considered positive. If either the primary or a metastatic site was positive, patients were eligible to receive the AR antagonist bicalutamide at a dose of 150 mg daily. Clinical benefit rate (CBR), the primary endpoint, was defined as the total number of patients who show a complete response (CR), partial response (PR), or stable disease (SD) > 6 months; secondary endpoints included progression-free survival (PFS) and toxicity. Correlative studies included measurement of circulating endocrine markers and IHC surrogates for basal-like breast cancer. Of 424 patients with ER/PgR-negative breast cancer, 12% tested AR-positive. The 6-month CBR was 19% 95% confidence interval (CI), 7%-39% for bicalutamide. The median PFS was 12 weeks (95% CI, 11-22 weeks). Bicalutamide was well-tolerated with no grade 4/5 treatment-related adverse events observed. AR was expressed in 12% of patients with ER/PgR-negative breast cancer screened for this trial. The CBR of 19% observed with bicalutamide shows proof of principle for the efficacy of minimally toxic androgen blockade in a select group of patients with ER/PgR-negative, AR-positive breast cancer.
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Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Vir: Osebne bibliografije
in: SICRIS
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