Dr Butler said: «Our results show that patients benefited
from pembrolizumab regardless of whether or not they had been pre-treated with ipilimumab.»
Not exact matches
The FDA also expanded the approval of
pembrolizumab to treat the majority of people with NSCLC who had received prior chemotherapy, greatly increasing the patient population that can benefit
from the treatment.
The trial included 305 patients
from 16 countries who were randomised 1:1 to
pembrolizumab or chemotherapy.
«The significant improvement in overall survival with
pembrolizumab was remarkable given that more than 40 % of patients crossed over
from the control arm to
pembrolizumab after progression of the disease,» said Reck.
Checkpoint inhibitors like ipilimumab — which has been on the market since 2011 — nivolumab, and
pembrolizumab stop tumor cells
from stimulating the receptors.
Reporting the results
from three trials of
pembrolizumab for patients with advanced melanoma, Dr Marcus Butler, a medical oncologist at the Princess Margaret Cancer Centre, Toronto, Canada, told ECCO2017 that 84 of the 1567 patients in the KEYNOTE - 001, 002 and 006 studies had advanced mucosal melanoma.
The KEYNOTE - 45 study randomised 542 patients
from 29 countries between November 2014 and November 2015 to either
pembrolizumab (200 mg, given intravenously once every three weeks for up to 24 months) or one of three chemotherapy options chosen by study investigators.
Once they identified this pathway, Hanks and colleagues conducted laboratory tests of a molecule that blocks melanoma cells
from going stealth, enabling the immune system to mount a direct attack while also enhancing the function of current immunotherapies such as
pembrolizumab and nivolumab.
Alley and his team presented data
from KEYNOTE - 028, an ongoing trial involving 13 different research sites in six different countries all looking at the effect of
pembrolizumab on patients with advanced malignancies, including malignant pleural mesothelioma.
Pembrolizumab blocks the action of the tumor - surface protein PD - 1, which many cancers use to hide themselves
from immune system T cells.
Pembrolizumab, an antibody drug already used to treat other forms of cancer, can be effective in the treatment of the most common form of mesothelioma, according to a new study led by investigators
from the Perelman School of Medicine at the University of Pennsylvania.
Aside
from atezolizumab, immunotherapies in this class include avelumab (Bavencio);
pembrolizumab (Keytruda); and nivolumab (Opdivo).
With the recent presentation of the data
from Keynote - 024, and the recent approval of
pembrolizumab for high PD - L1 expressing tumors, the landscape of lung cancer oncology will change dramatically and for the better.
Zakharia, who presented the data at the 2017 American Association for Cancer Research (AACR) Annual Meeting in Washington, DC, reveals the overall response data
from the trial, toxicity data, and compares the results to historical data of
pembrolizumab monotherapy
from KEYNOTE - 006, which included similar patients.
Early results
from an ongoing trial suggest that
pembrolizumab has promising activity in untreated melanoma patients with brain metastases.
Led by Leena Gandhi, MD, PhD, associate professor of medicine and director of thoracic medical oncology, researchers
from the KEYNOTE - 021 study demonstrated for the first time that combining an immune checkpoint inhibitor — in this case,
pembrolizumab — with a platinum - doublet chemotherapy regimen might be more effective than chemotherapy alone as first - line treatment for advanced, non-squamous NSCLC.