Almost two dozen researchers at a top medical journal have published a scathing scientific takedown of the Cass Review. Experts found that the NHS-issued reportâa non-peer reviewed publication authored by Dr. Hillary Cass, a pediatrician without clinical or research experience with trans patientsâwas marred by âunexplained protocol deviations,â âmethodological flaws,â and âunsubstantiated claims.â
Published on May 10 in BMC Medical Research Methodology, the report identified critical flaws in the study. The Cass Review led to a ban on puberty blockers targeting trans children in the UK. However, puberty blockers remain readily available to cisgender children, who may need them for conditions like precocious puberty.
âThese issues significantly undermine the validity of the Cass Reviewâs recommendations, such that the Review fails to fulfil its aims as commissioned and should not be used as the basis for policy making,â the researchers said in a statement to Erin in the Morning.
The Cass Review has been rejected by countless medical organizations across the globe which oversee aspects of trans health careâincluding the World Professional Association for Transgender Health (WPATH), the Endocrine Society, The American Academy of Pediatrics, the Association of the Scientific Medical Societies in Germany, and the Royal Australian and New Zealand College of Psychiatrists, to name just a few.
Nonetheless, it continues to act as the vanguard for anti-trans lawmakers and leaders grasping at straws for a scientific basis to further an extremist political agenda.