chr22-37066082-A-C

Variant names:

• chr22-37066082-A-C
• rs2146016503
• NM_001374504.1:c.2407T>G

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PM4 PP5_Moderate

The NM_001374504.1(TMPRSS6):​c.2407T>G​(p.Ter803Glyext*?) variant causes a stop lost change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: TMPRSS6 NM_001374504.1 stop_lost
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 3.32
• Publications: 0 publications found

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]

TMPRSS6 Gene-Disease associations (from GenCC):

• IRIDA syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P, Genomics England PanelApp

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM4: Stoplost variant in NM_001374504.1 Downstream stopcodon found after 32 codons.
• PP5: Variant 22-37066082-A-C is Pathogenic according to our data. Variant chr22-37066082-A-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 1675886.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMPRSS6	NM_001374504.1	c.2407T>G	p.Ter803Glyext*?	stop_lost	Exon 18 of 18	ENST00000676104.1	NP_001361433.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMPRSS6	ENST00000676104.1	c.2407T>G	p.Ter803Glyext*?	stop_lost	Exon 18 of 18		NM_001374504.1	ENSP00000501573.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Pathogenic:1

Mar 01, 2022

CeGaT Center for Human Genetics Tuebingen

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

TMPRSS6: PM2, PM4, PM3:Supporting, PP4 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.078	T
BayesDel_noAF	Benign	-0.35
CADD	Benign	8.5
DANN	Benign	0.75
Eigen	Pathogenic	0.95
Eigen_PC	Pathogenic	0.75
FATHMM_MKL	Uncertain	0.97	D
PhyloP100		3.3
Vest4		0.17
GERP RS		4.6
Mutation Taster		=11/189	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs2146016503; hg19: chr22-37462122;