Severe microcephaly
Gene: CRIPT
As discussed with the GMS Neurology Specialist Test Group webex call 11th July 2019: The Specialist Test Group all agreed that there is only enough evidence to rate this gene AmberCreated: 29 Jul 2019, 4:18 p.m. | Last Modified: 29 Jul 2019, 4:18 p.m.
Panel Version: 1.62
Comment on list classification: Updated rating to Amber. Borderline gene: 3 cases of CRIPT mutations causing microcephaly, but one case (in PMID:24389050) is inferred based on the genotype of the (first-cousin) parents because DNA wasn't available from the deceased patient.Created: 7 Feb 2017, 10:44 a.m.
Source NHS GMS was added to CRIPT.
2nd March 2017: Panel review was assessed and panel was revised according to expert review and additional curation. This panel began with an expert gene list from Professor Andrew Jackson (University of Edinburgh) for primary microcephaly (MCPH) and microcephalic primordial dwarfism (MPD). Other disorders are included where microcephaly is a primary feature. Disorders where microcephaly is not the primary presenting feature are not included (e.g. congenital disorders of glycosylation, Proud syndrome, Norrie disease). The panel does not include disorders with a cortical malformation (e.g. lissencephaly) since the Malformations of cortical development' panel would be applied to these patients.
This gene has been classified as Amber List (Moderate Evidence).
This gene has been classified as Amber List (Moderate Evidence).
Publications for CRIPT were set to 27250922 Leduc et al., 2016 describe a female with biallelic mutations in CRIPT, presenting with short stature, dysmorphic features, microcephaly and hypopigmented macules. They detect a c.8G>A (p.C3Y) missense variant inherited from the mother in exon 1, and a 1,331?bp deletion encompassing exon 1, inherited from the father; 24389050 Shaheen et al., 2014 report 2 cases: they examined cases with Short stature with microcephaly and distinctive facies (OMIM:615789). In a 3 year old boy they identified homozygosity for a 2bp insertion (c.133_134insGG) predicted to cause premature termination (Ala45GlyfsTer87). They also analyzed DNA from the first-cousin parents of a deceased affected male Saudi Arabian infant. The patient was presumed homozygous for a loss of function variant based on the heterozygous status of the parents.
CRIPT was added to Primary Microcephaly - Microcephalic Dwarfism Spectrumpanel. Sources: Other
CRIPT was created by rfoulger