https://medlineplus.gov/genetics/condition/1p36-deletion-syndrome/

"1p36 deletion syndrome is a disorder that typically causes severe intellectual disability. Most affected individuals do not speak, or speak only a few words. They may have temper tantrums, bite themselves, or exhibit other behavior problems. Most have structural abnormalities of the brain, and seizures occur in more than half of individuals with this disorder. Affected individuals usually have weak muscle tone (hypotonia) and swallowing difficulties (dysphagia).

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5.3.6 CUMULATIVE ANALYSIS OF POST-AUTHORIZATION ADVERSE EVENT REPORTS OF PF-07302048 (BNT162B2) RECEIVED THROUGH 28-FEB-2021 (5.3.6-postmarketing-experience) https://phmpt.org/document/5-3-6-postmarketing-experience-pdf/

"APPENDIX 1. LIST OF ADVERSE EVENTS OF SPECIAL INTEREST: 1p36 deletion syndrome;"

Also, see this paper from already way back in 2015:

1p36 deletion syndrome: an update

https://pubmed.ncbi.nlm.nih.gov/26345236/

"Deletions of chromosome 1p36 affect approximately 1 in 5,000 newborns and are the most common terminal deletions in humans. Medical problems commonly caused by terminal deletions of 1p36 include developmental delay, intellectual disability [...] "