I have found this in internet:
"The resulting immunodeficiency can allow cancer relapse and leave patients
at greater risk of infections which are often fatal," Associate Professor
Boyd  said. "The ability to overcome these immune system deficiencies
provides a completely new approach to treating cancer and may work in many
other severe clinical conditions such as HIV/AIDS. It may also boost the
effectiveness of vaccines to cancer and infections."

Anybody have tried to fight against aids increasing immune system?