Immunotherapy drug helps patients go cancer-free for twice as long, trial shows

Pembrolizumab kept head and neck cancers at bay for five years (PA) - (Alamy/PA)

An immunotherapy drug could help some cancer patients live years longer without the disease getting worse or coming back, a trial has found.

Pembrolizumab, sold under the brand name Keytruda, kept head and neck cancers at bay for five years compared to 30 months with standard care.