rs137853025

Positions:

• chr11-103177652-A-T

Variant summary

Our verdict is Pathogenic. Variant got 13 ACMG points: 14P and 1B. PM1 PM2 PM5 PP5_Very_Strong BP4

The NM_001377.3(DYNC2H1):​c.5971A>T​(p.Met1991Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000248 in 1,613,456 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M1991K) has been classified as Likely pathogenic.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: DYNC2H1 NM_001377.3 missense
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4
• Conservation: PhyloP100: 5.69

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]

ACMG classification

Verdict is Pathogenic. Variant got 13 ACMG points.

• PM1: In a region_of_interest AAA 2 (size 223) in uniprot entity DYHC2_HUMAN there are 5 pathogenic changes around while only 0 benign (100%) in NM_001377.3
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chrnull-null-null-null is described in UniProt as null.
• PP5: Variant 11-103177652-A-T is Pathogenic according to our data. Variant chr11-103177652-A-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 6500.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP4: Computational evidence support a benign effect (MetaRNN=0.2005617). . Strength limited to SUPPORTING due to the PP5.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DYNC2H1	NM_001080463.2	c.5971A>T	p.Met1991Leu	missense_variant	38/90	ENST00000650373.2	NP_001073932.1
DYNC2H1	NM_001377.3	c.5971A>T	p.Met1991Leu	missense_variant	38/89	ENST00000375735.7	NP_001368.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DYNC2H1	ENST00000650373.2	c.5971A>T	p.Met1991Leu	missense_variant	38/90		NM_001080463.2	ENSP00000497174.1
DYNC2H1	ENST00000375735.7	c.5971A>T	p.Met1991Leu	missense_variant	38/89	1	NM_001377.3	ENSP00000364887.2

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 152076 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461264 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 726886

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.00000180

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152192 Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1 AN XY: 74418

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

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: 0.00

Bravo AF: 0.00000378

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Asphyxiating thoracic dystrophy 3 Pathogenic:3

Pathogenic, criteria provided, single submitter	research	Molecular Biology Laboratory, Fundació Puigvert	Feb 01, 2020	- -
Pathogenic, no assertion criteria provided	literature only	OMIM	May 01, 2009	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	3billion	Sep 01, 2022	The variant is not observed in the gnomAD v2.1.1 dataset. Same nucleotide change resulting in same amino acid change has been previously reported as pathogenic/likely pathogenic with strong evidence (ClinVar ID: VCV000006500). A different missense change at the same codon (p.Met1991Lys) has been reported to be associated with DYNC2H1 -related disorder (ClinVar ID: VCV000439632 / PMID: 23456818). Therefore, this variant is classified as Likely pathogenic according to the recommendation of ACMG/AMP guideline. -

Jeune thoracic dystrophy Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 01, 2023

In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. This variant disrupts the p.Met1991 amino acid residue in DYNC2H1. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 23456818). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. 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. ClinVar contains an entry for this variant (Variation ID: 6500). This missense change has been observed in individuals with DYNC2H1-related conditions (PMID: 19442771, 33532864). It has also been observed to segregate with disease in related individuals. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces methionine, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 1991 of the DYNC2H1 protein (p.Met1991Leu). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Uncertain	0.033	T
BayesDel_noAF	Benign	-0.19
CADD	Benign	21
DANN	Benign	0.75
DEOGEN2	Benign	0.063	T;T;.;.
Eigen	Benign	-0.25
Eigen_PC	Benign	0.039
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.90	.;D;.;D
M_CAP	Benign	0.028	D
MetaRNN	Benign	0.20	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.94	N;N;N;N
PrimateAI	Uncertain	0.77	T
PROVEAN	Benign	-0.19	N;.;.;N
REVEL	Benign	0.17
Sift	Benign	0.81	T;.;.;T
Sift4G	Benign	0.91	T;.;.;T
Polyphen		0.0010	B;B;B;B
Vest4		0.73
MutPred		0.65		Loss of MoRF binding (P = 0.1986);Loss of MoRF binding (P = 0.1986);Loss of MoRF binding (P = 0.1986);Loss of MoRF binding (P = 0.1986);
MVP		0.56
MPC		0.058
ClinPred		0.33	T
GERP RS		5.6
Varity_R		0.24
gMVP		0.46

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: rs137853025; hg19: chr11-103048381;