rs184256941

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001377.3(DYNC2H1):c.4073G>A(p.Arg1358His) variant causes a missense change. The variant allele was found at a frequency of 0.000138 in 1,613,288 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00071 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000078 ( 0 hom. )

Consequence

DYNC2H1
NM_001377.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts P:2U:4

Conservation

PhyloP100: 5.67

Variant links:

Genes affected

DYNC2H1 (HGNC:2962): (dynein cytoplasmic 2 heavy chain 1) This gene encodes a large cytoplasmic dynein protein that is involved in retrograde transport in the cilium and has a role in intraflagellar transport, a process required for ciliary/flagellar assembly. Mutations in this gene cause a heterogeneous spectrum of conditions related to altered primary cilium function and often involve polydactyly, abnormal skeletogenesis, and polycystic kidneys. Alternative splicing results in multiple transcript variants encoding distinct proteins. [provided by RefSeq, Jan 2010]

DYNC2H1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.013823062).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DYNC2H1	NM_001080463.2 link	c.4073G>A	p.Arg1358His	missense_variant	Exon 26 of 90	ENST00000650373.2	NP_001073932.1	Q8NCM8-2
DYNC2H1	NM_001377.3 link	c.4073G>A	p.Arg1358His	missense_variant	Exon 26 of 89	ENST00000375735.7	NP_001368.2	Q8NCM8-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DYNC2H1	ENST00000650373.2 link	c.4073G>A	p.Arg1358His	missense_variant	Exon 26 of 90		NM_001080463.2	ENSP00000497174.1		Q8NCM8-2
DYNC2H1	ENST00000375735.7 link	c.4073G>A	p.Arg1358His	missense_variant	Exon 26 of 89	1	NM_001377.3	ENSP00000364887.2		Q8NCM8-1

Frequencies

GnomAD3 genomes

AF:

0.000710

AC:

108

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00143

GnomAD3 exomes

AF:

0.000226

AC:

AN:

247824

Hom.:

AF XY:

0.000193

AC XY:

AN XY:

134572

show subpopulations

Gnomad AFR exome

AF:

0.00318

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000223

Gnomad SAS exome

AF:

0.0000329

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000178

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000780

AC:

114

AN:

1461006

Hom.:

Cov.:

AF XY:

0.0000702

AC XY:

AN XY:

726742

show subpopulations

Gnomad4 AFR exome

AF:

0.00266

Gnomad4 AMR exome

AF:

0.0000897

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000151

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000900

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000709

AC:

108

AN:

152282

Hom.:

Cov.:

AF XY:

0.000712

AC XY:

AN XY:

74466

show subpopulations

Gnomad4 AFR

AF:

0.00241

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.0000617

Hom.:

Bravo

AF:

0.000774

ESP6500AA

AF:

0.00163

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000290

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:2Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Jeune thoracic dystrophy

Pathogenic:2Uncertain:1

University of Washington Center for Mendelian Genomics, University of Washington

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: research

- -

Jun 01, 2017

Dan Cohn Lab, University Of California Los Angeles

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: research

- -

Jun 27, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 1358 of the DYNC2H1 protein (p.Arg1358His). This variant is present in population databases (rs184256941, gnomAD 0.3%). This missense change has been observed in individual(s) with asphyxiating thoracic dystrophy (PMID: 29947050). ClinVar contains an entry for this variant (Variation ID: 446562). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt DYNC2H1 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Asphyxiating thoracic dystrophy 3

Uncertain:2

Jan 26, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The DYNC2H1 c.4073G>A; p.Arg1358His variant (rs184256941) is reported in the literature in an individual with asphyxiating thoracic dystrophy (Zhang 2018). This variant is also reported in ClinVar (Variation ID: 446562). It is observed in the general population with an overall allele frequency of 0.03% (80/279208 alleles) in the Genome Aggregation Database (v2.1.1). Computational analyses are uncertain whether this variant is neutral or deleterious (REVEL: 0.272). Due to limited information, the clinical significance of this variant is uncertain at this time. References: Zhang W et al. Expanding the genetic architecture and phenotypic spectrum in the skeletal ciliopathies. Hum Mutat. 2018 Jan;39(1):152-166. PMID: 29068549. -

Feb 22, 2022

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Uncertain:1

Sep 10, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: DYNC2H1 c.4073G>A (p.Arg1358His) results in a non-conservative amino acid change located in the Dynein heavy chain, linker (IPR013602) of the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00023 in 247824 control chromosomes. This frequency is not significantly higher than estimated for a pathogenic variant in DYNC2H1 causing Short-rib thoracic dysplasia (0.00023 vs 0.0025), allowing no conclusion about variant significance. c.4073G>A has been reported in the literature in at least one compound heterozygous individual affected with asphyxiating thoracic dystrophy with polydactyly (e.g. Zhang_2018). These data do not allow any conclusion about variant significance. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication has been ascertained in the context of this evaluation (PMID: 29068549). ClinVar contains an entry for this variant (Variation ID: 446562). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.35

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.60

D;D;.;.

Eigen

Benign

-0.032

Eigen_PC

Benign

-0.0017

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.86

.;D;.;D

M_CAP

Benign

0.065

MetaRNN

Benign

0.014

T;T;T;T

MetaSVM

Benign

-0.77

MutationAssessor

Pathogenic

3.3

M;M;M;M

PrimateAI

Uncertain

0.55

PROVEAN

Uncertain

-3.7

D;.;.;D

REVEL

Benign

0.27

Sift

Benign

0.066

T;.;.;T

Sift4G

Benign

0.085

T;.;.;T

Polyphen

0.27

B;B;P;P

Vest4

0.22

MVP

0.72

MPC

0.082

ClinPred

0.19

GERP RS

3.4

Varity_R

0.21

gMVP

0.40

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