3M Syndrome: An Easily Recognizable yet Underdiagnosed Cause of Proportionate Short Stature Al-Dosari, MS [ 2 ]; Al-Shammari, M [ 3,4 ]; Shaheen, R ; Faqeih, E [ 5 ]; AlGhofely, MA [ 5 ]; Boukai, A [ 6,3 ]; Alkuraya, FS [ 1,3,4,7 ] JOURNAL OF PEDIATRICS Volume: 161, Issue: 1, Pages: 139-+, DOI: 10.1016/j.jpeds.2011.12.051, Published: JUL 2012 Publisher MOSBY-ELSEVIER, 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA ISSN: 0022-3476 Abstract Objective To characterize, via clinical and molecul criteria, a cohort of patients with 3M syndrome and thereby increase awareness of this syndrome as a recognizable cause of proportionate short stature. Study design We conducted a case series of patients referred to clinical genetics for proportionate short stature. CUL7, OBSL1, and CCDC8 genes were clinically phenotyped and sequenced. Results In 6 Saudi families with 3M syndrome, we identified three CUL7, one OBSL1, and one CCDC8 novel mutations, which we show result in a remarkably similar clinical phenotype. Despite their typical and easily discernible clinical phenotype, all these patients have been extensively investigated for alternative causes of their short stature and received erroneous diagnoses. Conclusion Increased awareness about this syndrome among pediatricians and endocrinologists is needed to avoid a costly and unnecessary diagnostic odyssey. (J Pediatr 2012;square:square-square). Keywords KeyWords Plus:MEIER-GORLIN SYNDROME; DEVELOPMENTAL DISORDER; UBIQUITIN LIGASE; U4ATAC SNRNA; 3-M SYNDROME; MUTATIONS; CUL7; COMPLEX; GROWTH; OBSCURIN-LIKE-1 Author Information Reprint Address: Alkuraya, FS E-mail Addresses:falkuraya@kfshrc.edu.sa King Faisal Specialist Hosp & Res Ctr, Dept Genet, Dev Genet Unit, MBC 03,POB 3354, Riyadh 11211, Saudi Arabia. Organization-Enhanced Name(s) King Faisal Specialist Hospital & Research Center King Faisal Specialist Hospital & Research Center - Riyadh Addresses: [ 1 ] King Faisal Specialist Hosp & Res Ctr, Dept Genet, Dev Genet Unit, Riyadh 11211, Saudi Arabia Organization-Enhanced Name(s) King Faisal Specialist Hospital & Research Center King Faisal Specialist Hospital & Research Center - Riyadh [ 2 ] King Saud Univ, Coll Pharm, Dept Pharmaconosy, Riyadh, Saudi Arabia Organization-Enhanced Name(s) King Saud University [ 3 ] King Saud Univ, Coll Med, Riyadh 11461, Saudi Arabia Organization-Enhanced Name(s) King Saud University [ 4 ] King Saud Univ, Dept Pediat, King Khalid Univ Hosp, Riyadh, Saudi Arabia Organization-Enhanced Name(s) King Khalid University Hospital King Saud University [ 5 ] Suleimania Childrens Hosp, Riyadh 11525, Saudi Arabia Organization-Enhanced Name(s) Sulaimaniyah Children's Hospital [ 6 ] King Saud Univ, Dept Radiol, King Khalid Univ Hosp, Riyadh, Saudi Arabia Organization-Enhanced Name(s) King Khalid University Hospital King Saud University [ 7 ] Alfaisal Univ, Coll Med, Dept Anat & Cell Biol, Riyadh, Saudi Arabia Organization-Enhanced Name(s) Alfaisal University