Research Notes: Does Tysabri cause Progressive Multifocal Leukoencephalopathy

This page collects vetted references on medical safety, regulatory guidance, and clinical background for anyone researching this topic.

Primary topic reference

Understanding Does Tysabri cause Progressive Multifocal Leukoencephalopathy

A focused review of background, context, and source material on this subject.

World Health Organization (WHO)

Reference: World Health Organization (WHO)

Authoritative source for clinical, regulatory, and public-health background reading.

U.S. Food and Drug Administration (FDA)

Reference: U.S. Food and Drug Administration (FDA)

Authoritative source for clinical, regulatory, and public-health background reading.