4-82426523-C-G

Position:

• chr4-82426523-C-G

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PM2 PP3_Moderate PP5_Very_Strong

The NM_031372.4(HNRNPDL):​c.1132G>C​(p.Asp378His) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: HNRNPDL NM_031372.4 missense
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:5
• Conservation: PhyloP100: 5.81

Genes affected

HNRNPDL (HGNC:5037): (heterogeneous nuclear ribonucleoprotein D like) 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 two RRM domains that bind to RNAs. Three alternatively spliced transcript variants have been described for this gene. One of the variants is probably not translated because the transcript is a candidate for nonsense-mediated mRNA decay. The protein isoforms encoded by this gene are similar to its family member HNRPD. [provided by RefSeq, May 2011]

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.87
• PP5: Variant 4-82426523-C-G is Pathogenic according to our data. Variant chr4-82426523-C-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 144074.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HNRNPDL	NM_031372.4	c.1132G>C	p.Asp378His	missense_variant	6/8	ENST00000295470.10	NP_112740.1
HNRNPDL	NM_001207000.1	c.1022-394G>C		intron_variant			NP_001193929.1
HNRNPDL	NR_003249.2	n.1667G>C		non_coding_transcript_exon_variant	6/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HNRNPDL	ENST00000295470.10	c.1132G>C	p.Asp378His	missense_variant	6/8	1	NM_031372.4	ENSP00000295470	P4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Autosomal dominant limb-girdle muscular dystrophy type 1G Pathogenic:3

Pathogenic, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Jun 09, 2022	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 05, 2024	This sequence change replaces aspartic acid, which is acidic and polar, with histidine, which is basic and polar, at codon 378 of the HNRNPDL protein (p.Asp378His). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with autosomal dominant limb-girdle muscular dystrophy (PMID: 24647604). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 144074). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. For these reasons, this variant has been classified as Pathogenic. -
Pathogenic, no assertion criteria provided	literature only	OMIM	Aug 01, 2014	- -

not provided Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Jun 15, 2023

In silico analysis supports that this missense variant does not alter protein structure/function; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 32407983, 31267206, 24647604, 31995753, 30279180, 32904822) -

HNRNPDL-related myopathy with protein aggregates and rimmed vacuoles Pathogenic:1

Pathogenic, criteria provided, single submitter

research

Muscle and Diseases Team, Institut de Génétique et Biologie Moléculaire et Cellulaire

Mar 01, 2024

PS1+PM1+PM2+PP3+PP4+PP5 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.35	D
BayesDel_noAF	Pathogenic	0.27
CADD	Pathogenic	32
DANN	Uncertain	0.99
DEOGEN2	Benign	0.18	T;T;.;.;.
Eigen	Pathogenic	0.85
Eigen_PC	Pathogenic	0.82
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.90	.;D;.;.;D
M_CAP	Pathogenic	0.61	D
MetaRNN	Pathogenic	0.87	D;D;D;D;D
MetaSVM	Uncertain	0.61	D
MutationAssessor	Pathogenic	2.9	M;M;.;.;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Pathogenic	0.83	D
PROVEAN	Benign	-2.3	N;.;.;.;.
REVEL	Pathogenic	0.86
Sift	Benign	0.032	D;.;.;.;.
Sift4G	Uncertain	0.037	D;D;T;T;T
Polyphen		1.0	D;D;.;.;.
Vest4		0.92
MutPred		0.40		Gain of glycosylation at T380 (P = 0.0377);Gain of glycosylation at T380 (P = 0.0377);.;.;.;
MVP		0.85
MPC		1.3
ClinPred		0.95	D
GERP RS		5.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.39
gMVP		0.88

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: rs587777669; hg19: chr4-83347676;