2-171707348-A-G

Variant names:

• chr2-171707348-A-G
• rs370644903
• NM_001378.3:c.306A>G

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 0P and 11B. BP4_Strong BP6_Moderate BP7 BS2

The NM_001378.3(DYNC1I2):​c.306A>G​(p.Gln102Gln) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000162 in 1,613,642 control chromosomes in the GnomAD database, including 9 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.000092 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00017 (9 hom.)
• Consequence: DYNC1I2 NM_001378.3 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.0370
• Publications: 0 publications found

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

ACMG classification

Our verdict: Benign. The variant received -11 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.68).
• BP6: Variant 2-171707348-A-G is Benign according to our data. Variant chr2-171707348-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 3025172.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.037 with no splicing effect.
• BS2: High Homozygotes in GnomAdExome4 at 9 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DYNC1I2	NM_001378.3	c.306A>G	p.Gln102Gln	synonymous_variant	Exon 5 of 18	ENST00000397119.8	NP_001369.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DYNC1I2	ENST00000397119.8	c.306A>G	p.Gln102Gln	synonymous_variant	Exon 5 of 18	1	NM_001378.3	ENSP00000380308.3

Frequencies

GnomAD3 genomes AF: 0.0000920 AC: 14 AN: 152200 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00228

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.000957

GnomAD2 exomes AF: 0.000353 AC: 88 AN: 249416 AF XY: 0.000436

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000290

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000203

Gnomad OTH exome AF: 0.000661

GnomAD4 exome AF: 0.000169 AC: 247 AN: 1461324 Hom.: 9 Cov.: 31 AF XY: 0.000223 AC XY: 162 AN XY: 726914

African (AFR) AF: 0.00 AC: 0 AN: 33460

American (AMR) AF: 0.0000224 AC: 1 AN: 44654

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26122

East Asian (EAS) AF: 0.00 AC: 0 AN: 39684

South Asian (SAS) AF: 0.00158 AC: 136 AN: 86138

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53392

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5766

European-Non Finnish (NFE) AF: 0.0000890 AC: 99 AN: 1111750

Other (OTH) AF: 0.000166 AC: 10 AN: 60358

GnomAD4 genome AF: 0.0000919 AC: 14 AN: 152318 Hom.: 0 Cov.: 32 AF XY: 0.000134 AC XY: 10 AN XY: 74500

African (AFR) AF: 0.0000240 AC: 1 AN: 41586

American (AMR) AF: 0.00 AC: 0 AN: 15302

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00228 AC: 11 AN: 4822

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10612

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68020

Other (OTH) AF: 0.000947 AC: 2 AN: 2112

Alfa AF: 0.0000868 Hom.: 0

Bravo AF: 0.0000340

Asia WGS AF: 0.000289 AC: 1 AN: 3478

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Apr 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

DYNC1I2: BP4, BP7 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.68
CADD	Benign	2.8
DANN	Benign	0.33
PhyloP100		0.037
Mutation Taster		=89/11	polymorphism

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

Other links and lift over

dbSNP: rs370644903; hg19: chr2-172563858;