2-171725598-GTTTTTT-GTTTTTTTTTTTTT

Variant names:

• chr2-171725598-G-GTTTTTTT
• rs746910264
• NM_001378.3:c.512-10_512-4dupTTTTTTT

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_001378.3(DYNC1I2):​c.512-10_512-4dupTTTTTTT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.0000094 (0 hom., cov: 22)
  • Exomes 𝑓: 0.000014 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: DYNC1I2 NM_001378.3 splice_region, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.112
• 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: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DYNC1I2	NM_001378.3	c.512-10_512-4dupTTTTTTT		splice_region_variant, intron_variant	Intron 7 of 17	ENST00000397119.8	NP_001369.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DYNC1I2	ENST00000397119.8	c.512-20_512-19insTTTTTTT		intron_variant	Intron 7 of 17	1	NM_001378.3	ENSP00000380308.3

Frequencies

GnomAD3 genomes AF: 0.00000943 AC: 1 AN: 106074 Hom.: 0 Cov.: 22

Gnomad AFR AF: 0.0000361

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: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0000139 AC: 11 AN: 789130 Hom.: 0 Cov.: 15 AF XY: 0.0000150 AC XY: 6 AN XY: 398818

African (AFR) AF: 0.00 AC: 0 AN: 15682

American (AMR) AF: 0.00 AC: 0 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.0000665 AC: 1 AN: 15038

East Asian (EAS) AF: 0.00 AC: 0 AN: 25446

South Asian (SAS) AF: 0.000126 AC: 5 AN: 39548

European-Finnish (FIN) AF: 0.0000552 AC: 2 AN: 36244

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2308

European-Non Finnish (NFE) AF: 0.00000330 AC: 2 AN: 605466

Other (OTH) AF: 0.0000293 AC: 1 AN: 34120

GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000943 AC: 1 AN: 106074 Hom.: 0 Cov.: 22 AF XY: 0.0000197 AC XY: 1 AN XY: 50834

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000361 AC: 1 AN: 27672

American (AMR) AF: 0.00 AC: 0 AN: 10806

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 2660

East Asian (EAS) AF: 0.00 AC: 0 AN: 3646

South Asian (SAS) AF: 0.00 AC: 0 AN: 3466

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 5108

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 202

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 50382

Other (OTH) AF: 0.00 AC: 0 AN: 1454

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.11

Splicing

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

Other links and lift over

dbSNP: rs746910264; hg19: chr2-172582108;