Genetic Variant DYNC2I2:p.Ala341Gly (chr9-128634881-G-C) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 4P and 1B. PM2PM5BP4

The NM_052844.4(DYNC2I2):c.1022C>G(p.Ala341Gly) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,460,922 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A341V) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

DYNC2I2
NM_052844.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.22

Publications

1 publications found

Variant links:

Genes affected

DYNC2I2 (HGNC:28296): (dynein 2 intermediate chain 2) This gene encodes a member of the WD repeat protein family. WD repeats are minimally conserved regions of approximately 40 amino acids typically bracketed by gly-his and trp-asp (GH-WD), which may facilitate formation of heterotrimeric or multiprotein complexes. Members of this family are involved in a variety of cellular processes, including cell cycle progression, signal transduction, apoptosis, and gene regulation. Defects in this gene are a cause of short-rib thoracic dysplasia 11 with or without polydactyly. [provided by RefSeq, Mar 2014]

DYNC2I2 Gene-Disease associations (from GenCC):

short-rib thoracic dysplasia 11 with or without polydactyly
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, G2P
Jeune syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
short rib-polydactyly syndrome, Verma-Naumoff type
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

DYNC2I2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr9-128634881-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 97037.Status of the report is no_assertion_criteria_provided, 0 stars.

BP4

Computational evidence support a benign effect (MetaRNN=0.30473125).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
DYNC2I2	NM_052844.4 link	c.1022C>G	p.Ala341Gly	missense_variant	Exon 7 of 9	ENST00000372715.7	NP_443076.2
DYNC2I2	XM_047424057.1 link	c.1022C>G	p.Ala341Gly	missense_variant	Exon 8 of 10		XP_047280013.1
DYNC2I2	XM_011519179.3 link	c.938C>G	p.Ala313Gly	missense_variant	Exon 8 of 10		XP_011517481.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DYNC2I2	ENST00000372715.7 link	c.1022C>G	p.Ala341Gly	missense_variant	Exon 7 of 9	1	NM_052844.4	ENSP00000361800.2
DYNC2I2	ENST00000483181.1 link	n.615C>G		non_coding_transcript_exon_variant	Exon 3 of 3	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000402

AC:

AN:

248858

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000891

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1460922

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726762

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33472

American (AMR)

AF:

0.00

AC:

AN:

44700

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86228

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52788

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5640

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111906

Other (OTH)

AF:

0.00

AC:

AN:

60360

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.066

BayesDel_noAF

Benign

-0.33

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.072

Eigen

Benign

0.080

Eigen_PC

Benign

0.18

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.81

M_CAP

Benign

0.055

MetaRNN

Benign

0.30

MetaSVM

Benign

-0.98

MutationAssessor

Uncertain

2.3

PhyloP100

6.2

PrimateAI

Benign

0.48

PROVEAN

Benign

-1.3

REVEL

Benign

0.12

Sift

Benign

0.14

Sift4G

Uncertain

0.039

Vest4

0.38

ClinPred

0.81

GERP RS

4.3

Varity_R

0.15

gMVP

0.52

Mutation Taster

=64/36

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over