14-54755757-T-C

Position:

• chr14-54755757-T-C

Variant summary

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

The NM_015589.6(SAMD4A):​c.1176+4220T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.473 in 151,956 control chromosomes in the GnomAD database, including 18,060 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as association (★).

• Frequency: Genomes: 𝑓 0.47 (18060 hom., cov: 31)
• Consequence: SAMD4A NM_015589.6 intron
• Clinical Significance: association criteria provided, single submitter O:1
• Conservation: PhyloP100: -0.260

Genes affected

SAMD4A (HGNC:23023): (sterile alpha motif domain containing 4A) Sterile alpha motifs (SAMs) in proteins such as SAMD4A are part of an RNA-binding domain that functions as a posttranscriptional regulator by binding to an RNA sequence motif known as the Smaug recognition element, which was named after the Drosophila Smaug protein (Baez and Boccaccio, 2005 [PubMed 16221671]).[supplied by OMIM, Mar 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.571 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SAMD4A	NM_015589.6	c.1176+4220T>C		intron_variant		ENST00000554335.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SAMD4A	ENST00000554335.6	c.1176+4220T>C		intron_variant		5	NM_015589.6	A1

Frequencies

GnomAD3 genomes AF: 0.474 AC: 71909 AN: 151838 Hom.: 18058 Cov.: 31

Gnomad AFR AF: 0.344

Gnomad AMI AF: 0.689

Gnomad AMR AF: 0.387

Gnomad ASJ AF: 0.585

Gnomad EAS AF: 0.350

Gnomad SAS AF: 0.428

Gnomad FIN AF: 0.474

Gnomad MID AF: 0.500

Gnomad NFE AF: 0.576

Gnomad OTH AF: 0.484

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

GnomAD4 genome AF: 0.473 AC: 71931 AN: 151956 Hom.: 18060 Cov.: 31 AF XY: 0.465 AC XY: 34489 AN XY: 74248

Gnomad4 AFR AF: 0.344

Gnomad4 AMR AF: 0.386

Gnomad4 ASJ AF: 0.585

Gnomad4 EAS AF: 0.350

Gnomad4 SAS AF: 0.430

Gnomad4 FIN AF: 0.474

Gnomad4 NFE AF: 0.576

Gnomad4 OTH AF: 0.482

Alfa AF: 0.553 Hom.: 37064

Bravo AF: 0.459

Asia WGS AF: 0.376 AC: 1306 AN: 3478

ClinVar

Significance: association

Submissions summary: Other:1

Revision: criteria provided, single submitter

Submissions by phenotype

Lip and oral cavity carcinoma Other:1

association, criteria provided, single submitter

case-control

Department of Biological Science, Sunandan Divatia School of Science, NMIMS University

-

A significant association of rs1957358 (SAMD4A) TT (odds ratio [OR] 1.44; 95% confidence interval [CI] 1.10-1.90) indicated increased risk to oral cancer. While, rs1957358 (SAMD4A) TC (odds ratio [OR] 0.67; 95% confidence interval [CI] 0.53-0.87) indicated decreased risk to oral cancer. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	2.6
DANN	Benign	0.56

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

LitVar

Other links and lift over

dbSNP: rs1957358; hg19: chr14-55222475;