Structural eye disease
Gene: WNT2B
This gene is associated with a phenotype in OMIM but not Gene2Phenotype. This gene is also present on the Intestinal failure panel (Version 1.28).
Review submitted by Zornitza Stark on the Intestinal failure panel:
"Diarrhoea-9 is a form of neonatal-onset chronic diarrhoea characterized by an osmotic diarrhoea that is not substrate specific, abnormal crypt and villus architecture, and significant fat malabsorption. Three probands from two unrelated families and functional data suggesting severe intestinal dysregulation due to decreased intestinal stem cell number and function. Borderline Green/Amber. Sources: Expert Review
Zornitza Stark (Australian Genomics), 4 Jan 2021"
PMID: 33526876 reports an additional unrelated case. Patient is of Haitian descent (previous cases described in PMID:29909964 are of Vietnamese and Kuwaiti origins). Patient has neonatal onset diarrhoea with metabolic acidosis and failure to thrive. Patient also has bilateral microcornea and corneal clouding. Patient also presented with ambiguous genitalia and diagnosed with 46,XX testicular DSD. The authors reviewed the clinical findings of the previous patients they had reported on (PMID:29909964) and found that the Kuwaiti patients had bilateral microcornea, corneal neovascularization and thick corneas (I-2), and bilateral iridocorneal adhesions, congenital cataract, and iris coloboma (I-3). The gonadal findings in the Haitian patient was not seen in any of the other affected patients.
As there are only 2 cases of patients with microcornea and coloboma this gene has been given an Amber rating.
Sources: LiteratureCreated: 12 Apr 2021, 12:06 p.m.
Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal
Phenotypes
Diarrhoea 9, OMIM:618168; microcornea; coloboma, MONDO:0001476
Publications
Gene: wnt2b has been classified as Amber List (Moderate Evidence).
Publications for gene: WNT2B were set to
Phenotypes for gene: WNT2B were changed from 29909964; 33526876 to Diarrhoea 9, OMIM:618168; microcornea; coloboma, MONDO:0001476
gene: WNT2B was added gene: WNT2B was added to Structural eye disease. Sources: Literature watchlist tags were added to gene: WNT2B. Mode of inheritance for gene: WNT2B was set to BIALLELIC, autosomal or pseudoautosomal Phenotypes for gene: WNT2B were set to 29909964; 33526876 Review for gene: WNT2B was set to AMBER