Genetic Variant RPL36A-HNRNPH2:c.300+2257T>C (chrX-101397714-T-C) – ACMG Classification: Benign (-9 pts)

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_001199973.2(RPL36A-HNRNPH2):c.300+2257T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000356 in 778,622 control chromosomes in the GnomAD database, including 3 homozygotes. There are 102 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (no stars).

Frequency

Genomes: 𝑓 0.0010 ( 2 hom., 57 hem., cov: 23)

Exomes 𝑓: 0.00025 ( 1 hom. 45 hem. )

Consequence

RPL36A-HNRNPH2
NM_001199973.2 intron

Scores

Clinical Significance

Likely benign no assertion criteria provided B:1

Conservation

PhyloP100: -0.115

Variant links:

Genes affected

RPL36A-HNRNPH2 (HGNC:48349): (RPL36A-HNRNPH2 readthrough) This locus represents naturally occurring read-through transcription between the neighboring ribosomal protein L36a and heterogeneous nuclear ribonucleoprotein H2 (H') genes on chromosome X. The read-through transcript produces a protein with similarity to the protein encoded by the upstream locus, ribosomal protein L36a. Alternatively spliced transcript variants have been identified. [provided by RefSeq, Jan 2011]

RPL36A-HNRNPH2 links:

GLA (HGNC:4296): (galactosidase alpha) This gene encodes a homodimeric glycoprotein that hydrolyses the terminal alpha-galactosyl moieties from glycolipids and glycoproteins. This enzyme predominantly hydrolyzes ceramide trihexoside, and it can catalyze the hydrolysis of melibiose into galactose and glucose. A variety of mutations in this gene affect the synthesis, processing, and stability of this enzyme, which causes Fabry disease, a rare lysosomal storage disorder that results from a failure to catabolize alpha-D-galactosyl glycolipid moieties. [provided by RefSeq, Jul 2008]

GLA links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.88).

BP6

Variant X-101397714-T-C is Benign according to our data. Variant chrX-101397714-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 3030728.Status of the report is no_assertion_criteria_provided, 0 stars.

BS2

High Homozygotes in GnomAd4 at 2 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GLA	NM_000169.3 link	c.*95A>G		downstream_gene_variant		ENST00000218516.4	NP_000160.1	P06280Q53Y83

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RPL36A-HNRNPH2	ENST00000409170.3 link	c.300+2257T>C		intron_variant	Intron 4 of 4	4		ENSP00000386655.4		H7BZ11
GLA	ENST00000218516.4 link	c.*95A>G		downstream_gene_variant		1	NM_000169.3	ENSP00000218516.4		P06280

Frequencies

GnomAD3 genomes

AF:

0.00100

AC:

113

AN:

112673

Hom.:

Cov.:

AF XY:

0.00164

AC XY:

AN XY:

34813

show subpopulations

Gnomad AFR

AF:

0.0000323

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0104

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000661

GnomAD4 exome

AF:

0.000246

AC:

164

AN:

665893

Hom.:

AF XY:

0.000231

AC XY:

AN XY:

195187

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00475

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.000221

GnomAD4 genome

AF:

0.00100

AC:

113

AN:

112729

Hom.:

Cov.:

AF XY:

0.00163

AC XY:

AN XY:

34879

show subpopulations

Gnomad4 AFR

AF:

0.0000322

Gnomad4 AMR

AF:

0.0104

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000652

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.00136

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

GLA-related disorder

Benign:1

May 18, 2023

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely 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

-0.88

CADD

Benign

3.4

DANN

Benign

0.63

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over