rs1669296

Positions:

• chr12-57546293-T-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001261413.2(DCTN2):​c.37-197A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.174 in 151,892 control chromosomes in the GnomAD database, including 2,405 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.17 (2405 hom., cov: 31)
• Consequence: DCTN2 NM_001261413.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.79

Genes affected

DCTN2 (HGNC:2712): (dynactin subunit 2) This gene encodes a 50-kD subunit of dynactin, a macromolecular complex consisting of 10-11 subunits ranging in size from 22 to 150 kD. Dynactin binds to both microtubules and cytoplasmic dynein. It is involved in a diverse array of cellular functions, including ER-to-Golgi transport, the centripetal movement of lysosomes and endosomes, spindle formation, chromosome movement, nuclear positioning, and axonogenesis. This subunit is present in 4-5 copies per dynactin molecule. It contains three short alpha-helical coiled-coil domains that may mediate association with self or other dynactin subunits. It may interact directly with the largest subunit (p150) of dynactin and may affix p150 in place. Multiple alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, May 2012]

KIF5A (HGNC:6323): (kinesin family member 5A) This gene encodes a member of the kinesin family of proteins. Members of this family are part of a multisubunit complex that functions as a microtubule motor in intracellular organelle transport. Mutations in this gene cause autosomal dominant spastic paraplegia 10. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.252 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DCTN2	NM_001261413.2	c.37-197A>G		intron_variant		ENST00000548249.6	NP_001248342.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DCTN2	ENST00000548249.6	c.37-197A>G		intron_variant		1	NM_001261413.2	ENSP00000447824	P4

Frequencies

GnomAD3 genomes AF: 0.173 AC: 26326 AN: 151774 Hom.: 2393 Cov.: 31

Gnomad AFR AF: 0.211

Gnomad AMI AF: 0.239

Gnomad AMR AF: 0.140

Gnomad ASJ AF: 0.193

Gnomad EAS AF: 0.264

Gnomad SAS AF: 0.160

Gnomad FIN AF: 0.224

Gnomad MID AF: 0.186

Gnomad NFE AF: 0.143

Gnomad OTH AF: 0.168

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.174 AC: 26368 AN: 151892 Hom.: 2405 Cov.: 31 AF XY: 0.179 AC XY: 13283 AN XY: 74252

Gnomad4 AFR AF: 0.212

Gnomad4 AMR AF: 0.140

Gnomad4 ASJ AF: 0.193

Gnomad4 EAS AF: 0.264

Gnomad4 SAS AF: 0.160

Gnomad4 FIN AF: 0.224

Gnomad4 NFE AF: 0.143

Gnomad4 OTH AF: 0.166

Alfa AF: 0.167 Hom.: 335

Bravo AF: 0.173

Asia WGS AF: 0.177 AC: 617 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	0.92
DANN	Benign	0.59

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs1669296; hg19: chr12-57940076;