Genetic Variant DYNC1I2:p.Asn556Asp (chr2-171744178-A-G) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_001378.3(DYNC1I2):c.1666A>G(p.Asn556Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000687 in 1,455,750 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: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

DYNC1I2
NM_001378.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.32

Publications

1 publications found

Variant links:

Genes affected

DYNC1I2 (HGNC:2964): (dynein cytoplasmic 1 intermediate chain 2) This gene encodes a member of the dynein intermediate chain family. The encoded protein is a non-catalytic component of the cytoplasmic dynein 1 complex, which acts as a retrograde microtubule motor to transport organelles and vesicles. A pseudogene of this gene is located on chromosome 10. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2012]

DYNC1I2 Gene-Disease associations (from GenCC):

neurodevelopmental disorder with microcephaly and structural brain anomalies
Inheritance: AR Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P

DYNC1I2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.36122355).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DYNC1I2	NM_001378.3 link	c.1666A>G	p.Asn556Asp	missense_variant	Exon 16 of 18	ENST00000397119.8	NP_001369.1	Q13409-1A0A140VKE9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DYNC1I2	ENST00000397119.8 link	c.1666A>G	p.Asn556Asp	missense_variant	Exon 16 of 18	1	NM_001378.3	ENSP00000380308.3		Q13409-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000415

AC:

AN:

240692

AF XY:

0.00000767

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000310

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.87e-7

AC:

AN:

1455750

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

723798

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33216

American (AMR)

AF:

0.0000230

AC:

AN:

43442

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25960

East Asian (EAS)

AF:

0.00

AC:

AN:

39522

South Asian (SAS)

AF:

0.00

AC:

AN:

84340

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53318

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5748

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1110016

Other (OTH)

AF:

0.00

AC:

AN:

60188

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 04, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1666A>G (p.N556D) alteration is located in exon 16 (coding exon 15) of the DYNC1I2 gene. This alteration results from a A to G substitution at nucleotide position 1666, causing the asparagine (N) at amino acid position 556 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

0.46

BayesDel_addAF

Benign

-0.088

BayesDel_noAF

Benign

-0.27

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.18

.;T;.;.;.;.;T;.

Eigen

Uncertain

0.32

Eigen_PC

Uncertain

0.41

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.96

.;.;D;D;D;D;D;D

M_CAP

Benign

0.024

MetaRNN

Benign

0.36

T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.61

MutationAssessor

Uncertain

2.2

.;M;.;.;.;.;M;M

PhyloP100

9.3

PrimateAI

Pathogenic

0.83

PROVEAN

Uncertain

-2.4

N;N;N;N;N;N;N;N

REVEL

Benign

0.27

Sift

Benign

0.044

D;D;D;D;D;D;D;D

Sift4G

Benign

0.55

T;T;T;T;T;T;T;T

Polyphen

0.31

B;P;.;B;B;.;P;.

Vest4

0.46

MutPred

0.27

.;Loss of sheet (P = 0.0817);.;.;.;.;Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);

MVP

0.76

MPC

0.62

ClinPred

0.52

GERP RS

4.8

Varity_R

0.53

gMVP

0.51

Mutation Taster

=52/48

polymorphism

(source)

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

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2-171744178-A-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over