22-37084229-A-C

Position:

• chr22-37084229-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The ENST00000442782.7(TMPRSS6):​c.1262T>G​(p.Ile421Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000015 in 1,331,534 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/14 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I421T) has been classified as Benign.

• Frequency:
  • Genomes: 𝑓 0.0000067 (0 hom., cov: 29)
  • Exomes 𝑓: 8.5e-7 (0 hom.)
• Consequence: TMPRSS6 ENST00000442782.7 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.812

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 Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.16233185).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TMPRSS6	NM_001374504.1	c.1196+66T>G		intron_variant		ENST00000676104.1	NP_001361433.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TMPRSS6	ENST00000676104.1	c.1196+66T>G		intron_variant			NM_001374504.1	ENSP00000501573.1

Frequencies

GnomAD3 genomes AF: 0.00000675 AC: 1 AN: 148186 Hom.: 0 Cov.: 29

Gnomad AFR AF: 0.0000248

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: 8.45e-7 AC: 1 AN: 1183348 Hom.: 0 Cov.: 17 AF XY: 0.00 AC XY: 0 AN XY: 594934

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000113

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.00000675 AC: 1 AN: 148186 Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0 AN XY: 72140

Gnomad4 AFR AF: 0.0000248

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.53
CADD	Benign	0.24
DANN	Benign	0.46
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.0073	N
LIST_S2	Benign	0.20	T
M_CAP	Benign	0.0038	T
MetaRNN	Benign	0.16	T
MetaSVM	Benign	-0.86	T
PROVEAN	Benign	0.0	N
REVEL	Benign	0.067
Sift	Benign	0.087	T
Sift4G	Benign	0.14	T
Vest4		0.27
MutPred		0.44		Gain of solvent accessibility (P = 6e-04);
MVP		0.73
ClinPred		0.040	T
GERP RS		-1.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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: rs2543519; hg19: chr22-37480269;