rs228911

Positions:

• chr22-37107185-T-C

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 2P and 8B. PM2 BP4_Strong BS1

The NM_001374504.1(TMPRSS6):​c.-2+2318A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00023 in 152,150 control chromosomes in the GnomAD database, including 1 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 0.00023 (1 hom., cov: 31)
• Consequence: TMPRSS6 NM_001374504.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.14

Genes affected

TMPRSS6 (HGNC:16517): (transmembrane serine protease 6) The protein encoded by this gene is a type II transmembrane serine proteinase that is found attached to the cell surface. The encoded protein may be involved in matrix remodeling processes in the liver. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.97).
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00023 (35/152150) while in subpopulation AFR AF= 0.000795 (33/41504). AF 95% confidence interval is 0.000581. There are 1 homozygotes in gnomad4. There are 23 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TMPRSS6	NM_001374504.1	c.-2+2318A>G		intron_variant		ENST00000676104.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TMPRSS6	ENST00000676104.1	c.-2+2318A>G		intron_variant			NM_001374504.1	P1
TMPRSS6	ENST00000406725.6	c.-2+2154A>G		intron_variant		1		P1
TMPRSS6	ENST00000406856.7	c.-2+2318A>G		intron_variant		1

Frequencies

GnomAD3 genomes AF: 0.000224 AC: 34 AN: 152032 Hom.: 1 Cov.: 31

Gnomad AFR AF: 0.000773

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

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

GnomAD4 genome AF: 0.000230 AC: 35 AN: 152150 Hom.: 1 Cov.: 31 AF XY: 0.000309 AC XY: 23 AN XY: 74382

Gnomad4 AFR AF: 0.000795

Gnomad4 AMR AF: 0.0000654

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000208

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000142 Hom.: 0

Bravo AF: 0.000193

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.97
CADD	Benign	1.2
DANN	Benign	0.71

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs228911; hg19: chr22-37503225;