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. 2024 May 3;384(6695):584-590.
doi: 10.1126/science.adl1624. Epub 2024 May 2.

Risk of meningomyelocele mediated by the common 22q11.2 deletion

Keng Ioi Vong #  1   2 Sangmoon Lee #  1   2 Kit Sing Au  3 T Blaine Crowley  4 Valeria Capra  5 Jeremiah Martino  6 Meade Haller  7 Camila Araújo  8 Hélio R Machado  8 Renee George  1   2 Bryn Gerding  1   2 Kiely N James  1   2 Valentina Stanley  1   2 Nan Jiang  1   2 Kameron Alu  1   2 Naomi Meave  1   2 Anna S Nidhiry  2 Fiza Jiwani  1   2 Isaac Tang  1   2 Ashna Nisal  1   2 Ishani Jhamb  1   2 Arzoo Patel  1   2 Aakash Patel  1   2 Jennifer McEvoy-Venneri  1   2 Chelsea Barrows  1   2 Celina Shen  1   2 Yoo-Jin Ha  1   2 Robyn Howarth  1   2 Madison Strain  9 Allison Elizabeth Ashley-Koch  9 Matloob Azam  10 Sara Mumtaz  11 Gyang Markus Bot  12 Richard H Finnell  13 Zoha Kibar  14 Ahmed I Marwan  15 Gia Melikishvili  16 Hal S Meltzer  17 Osvaldo M Mutchinick  18 David A Stevenson  19 Henry J Mroczkowski  20 Betsy Ostrander  21 Erica Schindewolf  22 Julie Moldenhauer  22 Elaine H Zackai  4 Beverly S Emanuel  4 Sixto Garcia-Minaur  23 Beata A Nowakowska  24 Roger E Stevenson  25 Maha S Zaki  26 Hope Northrup  3 Hanna K McNamara  27 Kimberly A Aldinger  27   28   29 Ian G Phelps  28 Mei Deng  28 Ian A Glass  28 Spina Bifida Sequencing Consortium‡Bernice Morrow  30 Donna M McDonald-McGinn  4   31 Simone Sanna-Cherchi  6 Dolores J Lamb  7   32 Joseph G Gleeson  1   2
Collaborators, Affiliations

Risk of meningomyelocele mediated by the common 22q11.2 deletion

Keng Ioi Vong et al. Science. .

Abstract

Meningomyelocele is one of the most severe forms of neural tube defects (NTDs) and the most frequent structural birth defect of the central nervous system. We assembled the Spina Bifida Sequencing Consortium to identify causes. Exome and genome sequencing of 715 parent-offspring trios identified six patients with chromosomal 22q11.2 deletions, suggesting a 23-fold increased risk compared with the general population. Furthermore, analysis of a separate 22q11.2 deletion cohort suggested a 12- to 15-fold increased NTD risk of meningomyelocele. The loss of Crkl, one of several neural tube-expressed genes within the minimal deletion interval, was sufficient to replicate NTDs in mice, where both penetrance and expressivity were exacerbated by maternal folate deficiency. Thus, the common 22q11.2 deletion confers substantial meningomyelocele risk, which is partially alleviated by folate supplementation.

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