Drug Studies on Rett Syndrome: From Bench to Bedside.
After 70 drugs and decades of work, no medicine has cleared phase III for Rett syndrome—behavioral intervention is still the only evidence-based option.
01Research in Context
What this study did
Gomathi et al. (2020) looked at every drug trial ever run for Rett syndrome. They counted 70 different compounds. None had reached the final, large-scale test phase.
The team pulled papers from 1966 to 2019. They wanted to see which medicines moved from lab to clinic.
What they found
Zero drugs made it to phase III. Most stayed in Petri dishes or early safety tests.
The review shows a clear gap: lots of chemicals, no proven pill.
How this fits with other research
Bauman (1991) first mapped Rett features 29 years earlier. That paper described the disorder; Mohan shows the drug pipeline is still empty.
Matson et al. (2004) tried behavioral fixes for hand stereotypy and saw little change. Their null result supports Mohan’s point: if drugs and ABA both struggle, we need new science.
Galuska et al. (2006) used eye-tracking to reveal hidden cognitive skills. Mohan includes such studies to warn drug makers: pick outcome tools that can detect small gains.
Ward et al. (2021) found kids can express 1–3 words with informal eye-gaze tasks. Mohan cites this as proof that adapted measures, not standard IQ tests, should end drug trials.
Why it matters
For BCBAs, the message is simple: stay in your lane. No pill is coming soon. Keep teaching communication with eye-gaze devices, sensory breaks, and functional routines. Track tiny gains—the same micro-skills drug trials will need. Your data may even help future studies pick better endpoints.
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02At a glance
03Original abstract
Drug studies on Rett syndrome (RTT) have drastically increased over the past few decades. This review aims to provide master data on bench-to-bedside drug studies involving RTT. A comprehensive literature review was performed by searching in PUBMED, MEDLINE and Google Scholar, international, national and regional clinical trial registries and pharmaceutical companies using the keywords "Rett syndrome treatment and/or drug or compound or molecule". Seventy drugs were investigated in non-clinical (N = 65 animal/cell line-based studies; N = 5 iPSC-based study) and clinical trials (N = 34) for ameliorating the symptoms of RTT. Though there is good progress in both clinical and non-clinical studies, none of these drugs entered phase III/IV for being launched as a therapeutic agent for RTT.
Journal of autism and developmental disorders, 2020 · doi:10.1007/s10803-020-04381-y