trelstar and abiraterone

The relevance of drug treatment for prostate cancer increases with the number of patients who develop castration resistance. Currently, no unified treatment regimen for castration-resistant prostate cancer exists, but the standard treatment for these patients is continuous androgen deprivation therapy. This paper presents the experience of concomitant use of abiraterone acetate and triptorelin in patients with castration-resistant prostate cancer. Ten patients with disease duration of 1.5 to 18 years and established castration resistance are currently being followed up. Nine of ten patients have long-term bone metastases, one patient has visceral metastases. The combination therapy produced a significant PSA decrease in nine patients and regression of bone lesions in two patients.

Topics: Aged; Aged, 80 and over; Androstenes; Antineoplastic Combined Chemotherapy Protocols; Bone Neoplasms; Humans; Male; Middle Aged; Neoplasm Metastasis; Prostatic Neoplasms, Castration-Resistant; Triptorelin Pamoate

To report the outcome and course of disease in patients with metastatic castration-resistant prostate cancer (mCRPC) treated with first-line docetaxel followed by abiraterone acetate in a single center.. In this retrospective observational study, we reviewed the course of disease of all applicable patients with mCRPC treated with docetaxel followed by abiraterone at our center. We analyzed progression-free survival (PFS) of docetaxel and abiraterone treatments. We further searched for predictive factors for the duration of treatment response.. Median PFS between initiation of androgen deprivation therapy and the diagnosis of mCRPC was 32 months. Median PFS on docetaxel treatment was 9 months. Median PFS on abiraterone treatment was 11 months. Patients with higher Gleason scores (GS) (8-10) at initial diagnosis had a significantly longer median PFS on docetaxel as compared to patients with GS 6-7, p = 0.01. We demonstrate a significant correlation between the PFS on docetaxel and PFS on abiraterone in the post-docetaxel setting (Kendall tau r = 0.32, p = 0.019) as well as a significant negative correlation between the PSA nadir under abiraterone treatment and the time to progression under abiraterone (Kendall tau r = -0.43, p = 0.007).. High Gleason score appears to be predictive of duration of response to docetaxel. Interestingly, progression-free survival with abiraterone appears to be correlated with the duration of response with docetaxel, whereas PSA decline and low nadir appear to be predictive of response to abiraterone.

Topics: Aged; Androgen Antagonists; Androstenes; Anilides; Antineoplastic Agents, Hormonal; Antineoplastic Combined Chemotherapy Protocols; Bone Neoplasms; Buserelin; Cohort Studies; Disease-Free Survival; Docetaxel; Flutamide; Humans; Leuprolide; Liver Neoplasms; Lung Neoplasms; Male; Middle Aged; Nitriles; Prostatic Neoplasms, Castration-Resistant; Retrospective Studies; Taxoids; Tosyl Compounds; Treatment Outcome; Triptorelin Pamoate

Androgen-deprivation therapy (ADT) has been reported to be active in androgen receptor (AR)-expressing, relapsed/metastatic (RM), salivary gland cancers (SGCs). Abiraterone, an inhibitor of androgen synthesis, has recently been approved as a second-line treatment in hormone-resistant (HR) prostate cancer (PCa) patients. Two patients with AR-positive HR-RM adenocarcinoma, NOS of the salivary glands have been treated with abiraterone. This is the first time that this agent has been reported to be active in tumors other than HRPCa. Immunohistochemical analysis showed overexpression of EGFR, HER2, and HER3 in both untreated primary tumors. Sequencing analysis revealed a TP53 non-functional mutation in one case and a PIK3CA-activating mutation in the other. In conclusion, second line activity of ADT in AR-expressing, adenocarcinoma, NOS of salivary glands further strengthens the pathogenic and therapeutic role of AR signaling in AR-positive SGCs.

Topics: Adenocarcinoma; Adult; Androgen Antagonists; Androstenes; Androstenols; Anilides; Antineoplastic Agents, Hormonal; Drug Resistance, Neoplasm; Humans; Lung Neoplasms; Male; Middle Aged; Neoplasms, Hormone-Dependent; Nitriles; Receptors, Androgen; Salivary Gland Neoplasms; Tosyl Compounds; Treatment Outcome; Triptorelin Pamoate