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Severe microcephaly

Region: ISCA-37390-Loss

5p15 terminal (Cri du chat syndrome) region Loss

Green List (high evidence)
Chromosome: 5
GRCh38 Position: 37695-11347150
Haploinsufficiency Score: Sufficient evidence suggesting dosage sensitivity is associated with clinical phenotype
Triplosensitivity Score:
Required percent of overlap: 60%
Variant types: CNV Loss

2 reviews

Ivone Leong (Genomics England Curator)

The required percent of overlap for this region has been changed from 80% to 60% following NHS Genomic Medicine Service approval.
Created: 16 Mar 2022, 12:16 p.m. | Last Modified: 16 Mar 2022, 12:16 p.m.
Panel Version: 2.294
Created: 16 Mar 2022, 12:16 p.m.
Last Modified: 16 Mar 2022, 12:16 p.m.
Panel version: 2.294

Louise Daugherty (Genomics England Curator)

Green List (high evidence)

As discussed with the GMS Neurology Specialist Test Group webex call 11th July 2019: The Specialist Test Group all agreed that there is enough evidence to rate this region Green
Created: 29 Jul 2019, 4:20 p.m. | Last Modified: 29 Jul 2019, 4:20 p.m.
Panel Version: 1.62
Created: 29 Jul 2019, 4:20 p.m.
Last Modified: 29 Jul 2019, 4:20 p.m.
Panel version: 1.62

Details

ISCA ID
ISCA-37390-Loss
ISCA Region Name
5p15 terminal (Cri du chat syndrome) region Loss
Chromosome
5
GRCh38 Coordinates
37695-11347150
Haploinsufficiency Score
Sufficient evidence suggesting dosage sensitivity is associated with clinical phenotype
Triplosensitivity Score
Required percent of overlap
60%
Mode of Inheritance
MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Sources
  • NHS GMS
  • Expert Review Green
  • ClinGen
Phenotypes
  • 123450
  • PMID 15635506: characteristic cry, speech delay, facial dysmorphology, and level of mental retardation. PMID 11238681: interstitial deletions and one with a small terminal deletion confirmed the existence of two critical regions, one for dysmorphism and mental retardation in p15.2 and the other for the cat cry in p15.3. Results from one patient permitted the cat cry region to be distally narrowed from D5S13 to D5S731, study supports hypothesis of a separate region in p15.3 for the speech delay
Clinvar variants
Variants in
Penetrance
None
Variant types
CNV Loss
Publications

History Filter Activity

16 Mar 2022, Gel status: 3

Changed Triplosensitivity Score, Changed Required Overlap Percentage

Arina Puzriakova (Genomics England Curator)

Triplosensitivity Score for ISCA-37390-Loss was changed from None to . Required Overlap Percentage for ISCA-37390-Loss was changed from 80 to 60.

29 Jul 2019, Gel status: 3

Changed Triplosensitivity Score, Added New Source

Louise Daugherty (Genomics England Curator)

Triplosensitivity Score for ISCA-37390-Loss was changed from to None. Source NHS GMS was added to Region: ISCA-37390-Loss.

7 Sep 2018, Gel status: 4

Created, Added New Source, Set mode of inheritance, Set publications, Set Phenotypes

Louise Daugherty (Genomics England Curator)

Region: ISCA-37390-Loss was added Region: ISCA-37390-Loss was added to Primary Microcephaly - Microcephalic Dwarfism Spectrum. Sources: ClinGen,Expert Review Green Mode of inheritance for Region: ISCA-37390-Loss was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown Publications for Region: ISCA-37390-Loss were set to 11238681; 15635506 Phenotypes for Region: ISCA-37390-Loss were set to 123450; PMID 15635506: characteristic cry, speech delay, facial dysmorphology, and level of mental retardation. PMID 11238681: interstitial deletions and one with a small terminal deletion confirmed the existence of two critical regions, one for dysmorphism and mental retardation in p15.2 and the other for the cat cry in p15.3. Results from one patient permitted the cat cry region to be distally narrowed from D5S13 to D5S731, study supports hypothesis of a separate region in p15.3 for the speech delay