11-1997144-G-A

Position:

• chr11-1997144-G-A

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_Strong BP6

The NM_001400176.1(MRPL23):​c.498-14397G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (no stars).

• Frequency: Genomes: not found (cov: 0)
• Consequence: MRPL23 NM_001400176.1 intron
• Clinical Significance: Benign no assertion criteria provided B:1
• Conservation: PhyloP100: -2.42

Genes affected

H19 (HGNC:):

MRPL23 (HGNC:10322): (mitochondrial ribosomal protein L23) Mammalian mitochondrial ribosomal proteins are encoded by nuclear genes and help in protein synthesis within the mitochondrion. Mitochondrial ribosomes (mitoribosomes) consist of a small 28S subunit and a large 39S subunit. They have an estimated 75% protein to rRNA composition compared to prokaryotic ribosomes, where this ratio is reversed. Another difference between mammalian mitoribosomes and prokaryotic ribosomes is that the latter contain a 5S rRNA. Among different species, the proteins comprising the mitoribosome differ greatly in sequence, and sometimes in biochemical properties, which prevents easy recognition by sequence homology. This gene encodes a 39S subunit protein. The gene is biallelically expressed, despite its location within a region of imprinted genes on chromosome 11. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -5 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BP6: Variant 11-1997144-G-A is Benign according to our data. Variant chr11-1997144-G-A is described in ClinVar as [Benign]. Clinvar id is 3037514.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MRPL23	NM_001400176.1	c.498-14397G>A		intron_variant			NP_001387105.1
MRPL23	XM_011520273.2	c.498-14397G>A		intron_variant			XP_011518575.1
H19	NR_002196.3	n.699C>T		non_coding_transcript_exon_variant	1/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
H19	ENST00000412788.6	n.699C>T		non_coding_transcript_exon_variant	1/5	1
H19	ENST00000414790.9	n.700C>T		non_coding_transcript_exon_variant	1/5	1
H19	ENST00000411861.6	n.699C>T		non_coding_transcript_exon_variant	1/4	2

Frequencies

GnomAD3 genomes Cov.: 0

GnomAD3 exomes AF: 0.0393 AC: 5431 AN: 138090 Hom.: 159 AF XY: 0.0403 AC XY: 3015 AN XY: 74812

Gnomad AFR exome AF: 0.00831

Gnomad AMR exome AF: 0.0289

Gnomad ASJ exome AF: 0.0435

Gnomad EAS exome AF: 0.000284

Gnomad SAS exome AF: 0.0350

Gnomad FIN exome AF: 0.0438

Gnomad NFE exome AF: 0.0547

Gnomad OTH exome AF: 0.0509

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 0

Alfa AF: 0.0418 Hom.: 17

Asia WGS AF: 0.0140 AC: 49 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

Submissions by phenotype

H19-related disorder Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jan 02, 2020

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	0.13
DANN	Benign	0.70

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs11564733; hg19: chr11-2018374;