7-24698578-A-G

Position:

• chr7-24698578-A-G

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_001127453.2(GSDME):​c.*448T>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00826 in 248,128 control chromosomes in the GnomAD database, including 60 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.013 (56 hom., cov: 33)
  • Exomes 𝑓: 0.0015 (4 hom.)
• Consequence: GSDME NM_001127453.2 3_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.600

Genes affected

GSDME (HGNC:2810): (gasdermin E) Hearing impairment is a heterogeneous condition with over 40 loci described. The protein encoded by this gene is expressed in fetal cochlea, however, its function is not known. Nonsyndromic hearing impairment is associated with a mutation in this gene. Three transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BP6: Variant 7-24698578-A-G is Benign according to our data. Variant chr7-24698578-A-G is described in ClinVar as [Benign]. Clinvar id is 359826.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0125 (1905/152304) while in subpopulation AFR AF= 0.0431 (1790/41556). AF 95% confidence interval is 0.0414. There are 56 homozygotes in gnomad4. There are 909 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 1905 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GSDME	NM_001127453.2	c.*448T>C		3_prime_UTR_variant	10/10	ENST00000645220.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GSDME	ENST00000645220.1	c.*448T>C		3_prime_UTR_variant	10/10		NM_001127453.2	P1

Frequencies

GnomAD3 genomes AF: 0.0124 AC: 1886 AN: 152186 Hom.: 52 Cov.: 33

Gnomad AFR AF: 0.0427

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00471

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000338

Gnomad OTH AF: 0.00860

GnomAD4 exome AF: 0.00151 AC: 145 AN: 95824 Hom.: 4 Cov.: 0 AF XY: 0.00119 AC XY: 59 AN XY: 49606

Gnomad4 AFR exome AF: 0.0388

Gnomad4 AMR exome AF: 0.00584

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000746

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000239

Gnomad4 OTH exome AF: 0.00290

GnomAD4 genome AF: 0.0125 AC: 1905 AN: 152304 Hom.: 56 Cov.: 33 AF XY: 0.0122 AC XY: 909 AN XY: 74486

Gnomad4 AFR AF: 0.0431

Gnomad4 AMR AF: 0.00471

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000338

Gnomad4 OTH AF: 0.00851

Alfa AF: 0.00890 Hom.: 1

Bravo AF: 0.0143

Asia WGS AF: 0.00346 AC: 12 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Autosomal dominant nonsyndromic hearing loss 5 Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	0.72
DANN	Benign	0.56

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs144061292; hg19: chr7-24738197;