chrX-101412216-A-T

Position:

• chrX-101412216-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_019597.5(HNRNPH2):​c.228A>T​(p.Glu76Asp) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 23)
• Consequence: HNRNPH2 NM_019597.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.93

Genes affected

HNRNPH2 (HGNC:5042): (heterogeneous nuclear ribonucleoprotein H2) This gene belongs to the subfamily of ubiquitously expressed heterogeneous nuclear ribonucleoproteins (hnRNPs). The hnRNPs are RNA binding proteins and they complex with heterogeneous nuclear RNA (hnRNA). These proteins are associated with pre-mRNAs in the nucleus and appear to influence pre-mRNA processing and other aspects of mRNA metabolism and transport. While all of the hnRNPs are present in the nucleus some seem to shuttle between the nucleus and the cytoplasm. The hnRNP proteins have distinct nucleic acid binding properties. The protein encoded by this gene has three repeats of quasi-RRM domains that binds to RNAs. It is very similar to the family member HNRPH1. This gene is thought to be involved in Fabray disease and X-linked agammaglobulinemia phenotype. Alternative splicing results in multiple transcript variants encoding the same protein. Read-through transcription between this locus and the ribosomal protein L36a gene has been observed. [provided by RefSeq, Jan 2011]

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.28147414).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HNRNPH2	NM_019597.5	c.228A>T	p.Glu76Asp	missense_variant	2/2	ENST00000316594.6	NP_062543.1
HNRNPH2	NM_001032393.3	c.228A>T	p.Glu76Asp	missense_variant	2/2		NP_001027565.1
RPL36A-HNRNPH2	NM_001199973.2	c.*224A>T		3_prime_UTR_variant	5/5		NP_001186902.2
RPL36A-HNRNPH2	NM_001199974.2	c.*224A>T		3_prime_UTR_variant	4/4		NP_001186903.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HNRNPH2	ENST00000316594.6	c.228A>T	p.Glu76Asp	missense_variant	2/2	1	NM_019597.5	ENSP00000361927.2
RPL36A-HNRNPH2	ENST00000409338.5	c.*224A>T		3_prime_UTR_variant	4/4	4		ENSP00000386974.2

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 23

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 25, 2024

The c.228A>T (p.E76D) alteration is located in exon 2 (coding exon 1) of the HNRNPH2 gene. This alteration results from a A to T substitution at nucleotide position 228, causing the glutamic acid (E) at amino acid position 76 to be replaced by an aspartic acid (D). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.37
BayesDel_addAF	Benign	-0.32	T
BayesDel_noAF	Benign	-0.70
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.11	T
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Uncertain	0.93	D
M_CAP	Benign	0.0091	T
MetaRNN	Benign	0.28	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.7	L
PrimateAI	Uncertain	0.78	T
PROVEAN	Benign	-1.1	N
REVEL	Benign	0.13
Sift	Benign	0.19	T
Sift4G	Benign	0.37	T
Polyphen		0.41	B
Vest4		0.33
MutPred		0.30		Gain of MoRF binding (P = 0.1517);
MVP		0.74
MPC		1.4
ClinPred		0.64	D
GERP RS		4.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.48
gMVP		0.81

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

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-100667204;