Veteran jam act moe. has announced an unplanned, indefinite hiatus effective August 1, 2017. The band made the announcement following bassist Rob Derhak’s cancer diagnosis.

In an statement signed by all five members of moe., the band confirmed they will perform July 21 in New York City, July 28 at Huckleberry Jam and at the Lockn’ Festival with Phil Lesh. Those three shows are the only appearances the band will make for the foreseeable future.

The announcement revealed Derhak learned last week he has oropharyngeal cancer. “Although I’d known something wasn’t quite right for a while, I wasn’t expecting to get this news,” wrote Derhak. “The prognosis is good, and the survival rate is high. Unfortunately the treatment will be rough on my body, and my voice.”

The complete letter to the the “Famoe.ly” can be read below: