chr18-8793526-T-G

Variant names:

• chr18-8793526-T-G
• rs588397
• NM_001395333.1:c.3090+406T>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001395333.1(MTCL1):​c.3090+406T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0234 in 152,328 control chromosomes in the GnomAD database, including 140 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 0.023 (140 hom., cov: 33)
• Consequence: MTCL1 NM_001395333.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0310
• Publications: 1 publications found

Genes affected

MTCL1 (HGNC:29121): (microtubule crosslinking factor 1) Enables microtubule binding activity. Predicted to be involved in establishment or maintenance of epithelial cell apical/basal polarity; microtubule bundle formation; and positive regulation of protein targeting to membrane. Located in midbody and spindle pole. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.81).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0793 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MTCL1	NM_001395333.1	c.3090+406T>G		intron_variant	Intron 7 of 14	ENST00000695636.1	NP_001382262.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MTCL1	ENST00000695636.1	c.3090+406T>G		intron_variant	Intron 7 of 14		NM_001395333.1	ENSP00000512073.1

Frequencies

GnomAD3 genomes AF: 0.0233 AC: 3541 AN: 152210 Hom.: 138 Cov.: 33

Gnomad AFR AF: 0.0813

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00765

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000206

Gnomad OTH AF: 0.0191

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

GnomAD4 genome AF: 0.0234 AC: 3566 AN: 152328 Hom.: 140 Cov.: 33 AF XY: 0.0225 AC XY: 1677 AN XY: 74486

African (AFR) AF: 0.0816 AC: 3392 AN: 41558

American (AMR) AF: 0.00764 AC: 117 AN: 15312

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

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

South Asian (SAS) AF: 0.000414 AC: 2 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

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

European-Non Finnish (NFE) AF: 0.000206 AC: 14 AN: 68030

Other (OTH) AF: 0.0194 AC: 41 AN: 2112

Alfa AF: 0.0226 Hom.: 19

Bravo AF: 0.0269

Asia WGS AF: 0.00895 AC: 31 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
CADD	Benign	3.6
DANN	Benign	0.49
PhyloP100		0.031
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs588397; hg19: chr18-8793524;