“The recent report of results of RTOG 9601 by Shipley et al in The New England Journal of Medicine—reviewed in this issue of The ASCO Post—strongly supports the variably used practice of adding ‘androgen blockade’ to salvage radiation therapy in men with a rising prostate-specific antigen (PSA) after radical prostatectomy. The findings show a clear reduction in prostate cancer–specific and overall mortality with the addition of 2 years of bicalutamide to salvage radiation therapy. Another likely (although not demonstrated) benefit is the reduction in the need to treat patients with subsequent life-long continuous or intermittent androgen blockade at the expense of treating all men with 2 years of bicalutamide.”
“Treatment with nintedanib plus pemetrexed and cisplatin improved progression-free survival (PFS) in the frontline setting by 3.7 months for chemotherapy-naive patients with malignant pleural mesothelioma (MPM), according to data reported at the 2017 ASCO Annual Meeting.
“In the phase II trial, known as LUME-Meso, the median PFS was 9.4 months with the nintedanib combination versus 5.7 months with pemetrexed and cisplatin alone (HR, 0.54; 95% CI, 0.33-0.87; P = .010). The median overall survival (OS) was 18.3 months with nintedanib versus 14.2 months with chemotherapy alone; however, this finding was not statistically significant (HR, 0.77; 95% CI, 0.46-1.29; P = .319).”
“At the 2017 ASCO Annual Meeting, results were presented from the phase II I-SPY 2 trial investigating pembrolizumab (Keytruda) in combination with standard therapy (paclitaxel followed by doxorubicin and cyclophosphamide) as a neoadjuvant treatment for patients with locally advanced triple-negative breast cancer or hormone receptor–positive/HER2-negative breast cancer (Abstract 506).
“Findings showed that the addition of pembrolizumab increased the estimated pathologic complete response rate nearly threefold in patients with triple-negative breast cancer (60% vs 20%) and in patients with hormone receptor–positive/HER2-negative breast cancer (34% vs 13%) compared to standard therapy. Overall, based on Bayesian predictive probability of success in a confirmatory phase III trial, pembrolizumab has graduated from the I-SPY 2 TRIAL for all signatures in which it was tested (triple-negative breast cancer, all HER2-negative, and hormone receptor–positive/HER2-negative).”
“Combining the IDO inhibitor epacadostat with nivolumab (Opdivo) demonstrated promising signs of activity for patients with squamous cell carcinoma of the head and neck (SCCHC) and those with melanoma, according to findings from the phase I/II ECHO-204 study presented at the 2017 ASCO Annual Meeting.
“The combination demonstrated an objective response rate (ORR) of 63% and a complete response (CR) rate of 5% for patients with treatment-naive melanoma, in the multi-arm, open-label trial. In those with SCCHC, the ORR was 23% and the CR rate was 3%. The combination was not effective in unselected patients with ovarian cancer and colorectal cancer (CRC).”
“Researchers at Johns Hopkins University are conducting the first clinical trials to evaluate the potential of a pinworm medication for the treatment of children and adults with newly diagnosed glioblastoma.
“Mebendazole has been used for more than 40 years to treat parasitic infections.
“Although the medication requires further testing in patients with cancer, results of a phase 1 trial have shown the medication is safe for and tolerated by adults with glioblastoma. An additional phase 1 trial is underway to assess the agent in children.”
“The FDA granted orphan drug designation to tucatinib for the treatment of patients with breast cancer whose disease metastasized to the brain, according to the drug’s manufacturer.
“Tucatinib (ONT-380, Cascadian Therapeutics) is an investigational, orally bioavailable, potent tyrosine kinase inhibitor that is highly selective for HER-2 without significant inhibition of EGFR, which has been associated with significant toxicities.”
“Researchers presenting a preclinical study at the 2017 Annual Meeting of the Society of Nuclear Medicine and Molecular Imaging (SNMMI) demonstrated the efficacy and optimal dose for targeted photodynamic therapy (tPDT) to treat prostate cancer before and during surgery. Prostate-specific membrane antigen (PSMA) was targeted with an anti-PSMA antibody radiolabeled with the tracer indium-111 (111In) and coupled with specialized photosensitizers that cause cell destruction upon exposure to near-infrared (NIR). The combined formula is 111In-DTPA-D2B-IRDye700DX.
” ‘Coupling the photosensitizer to an imaging agent that targets PSMA on the tumor surface makes it possible to selectively and effectively destroy prostate tumor remnants and micrometastases while surrounding healthy tissues remain unaffected,’ said Susanne Lütje, MD, PhD, lead author of the study from the Department of Radiology and Nuclear Medicine at Radboud University Medical Center in Nijmegen, the Netherlands, and the Clinic for Nuclear Medicine at University Hospital Essen, Germany.”
“Malignant neuroendocrine tumors, commonly called NETs, are easy to miss and associated with discouraging survival rates and poor quality of life. A study presented at the 2017 Annual Meeting of the Society of Nuclear Medicine and Molecular Imaging (SNMMI) shows how a novel peptide receptor radionuclide therapy (PRRT) is significantly improving patient wellbeing.
“In the NETTER-1 Phase III Trial, a randomized prospective study, researchers focused on advanced midgut NETs and reviewed patient-reported quality of life questionnaires following treatment with lutetium-177 (177Lu)-octreotate PRRT, also known as 177Lu-DOTATATE—brand name Lutathera. Treatment with Lutathera provided some relief for neuroendocrine cancer patients in the study when compared to high-dose octreotide, used as a control.”
“Neuroendocrine cancer is exceedingly difficult to manage and unlikely to be cured, but researchers intend to slow progression of these tumors and aid survival by personalizing patient dose of peptide-receptor radionuclide therapy (PRRT), according to research presented at the 2017 Annual Meeting of the Society of Nuclear Medicine and Molecular Imaging (SNMMI).
“PRRT has become a treatment of choice for relatively rare and easy-to-overlook neuroendocrine tumors (NETs). The targeted treatment is designed to home in on and attach to peptide-receptor positive tumors, while sparing tissues that might otherwise be damaged by systemic treatments. However, researchers are still perfecting the practice.”