Monosomy 9p

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Monosomy 9p
Classification and external resources
OMIM 158170

Monosomy 9p (also known as Alfi's Syndrome or simply 9P-) is a rare chromosomal disorder in which there is deletion (monosomy) of a portion of chromosome 9. Symptoms include microgenitalia, mental retardation with microcephaly and dysmorphic features.

The location has recently been narrowed to 9p22.2-p23.[1]

Various clinical features have been associated with this disease including trigonocephaly, flattened occiput, prominent forehead, broad flat nasal bridge, anteverted nares, malformed external ears, hypertelorism, and hypertonia.[2]


  1. ^ Kawara H, Yamamoto T, Harada N, et al. (February 2006). "Narrowing candidate region for monosomy 9p syndrome to a 4.7-Mb segment at 9p22.2-p23". Am. J. Med. Genet. A. 140 (4): 373–7. doi:10.1002/ajmg.a.31094. PMID 16419130. 
  2. ^ "OMIM Entry - # 158170 - CHROMOSOME 9p DELETION SYNDROME". Retrieved 2017-03-10. 

External links[edit]

Discovered by Omar Alfi.