X-100594012-T-C

Variant names:

• chrX-100594012-T-C
• rs1219565379
• NM_022144.3:c.298T>C

Variant summary

Our verdict is Benign. Variant got -11 ACMG points: 0P and 11B. BP4_Strong BP6_Moderate BP7 BS2

The NM_022144.3(TNMD):​c.298T>C​(p.Leu100Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000912 in 1,097,055 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 2 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 21)
  • Exomes 𝑓: 0.0000091 (0 hom. 2 hem.)
• Consequence: TNMD NM_022144.3 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 1.20

Genes affected

TNMD (HGNC:17757): (tenomodulin) This gene encodes a protein that is related to chondromodulin-I, which is a cartilage-specific glycoprotein that functions to stimulate chondrocyte growth and to inhibit tube formation of endothelial cells. This protein is also an angiogenesis inhibitor. Genetic variation in this gene is associated with a risk for type 2 diabetes, central obesity and serum levels of systemic immune mediators in a body size-dependent manner. This gene is also a candidate gene for age-related macular degeneration, though a direct link has yet to be demonstrated. [provided by RefSeq, Sep 2009]

ACMG classification

Verdict is Benign. Variant got -11 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.53).
• BP6: Variant X-100594012-T-C is Benign according to our data. Variant chrX-100594012-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 2661031.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=1.2 with no splicing effect.
• BS2: High Hemizygotes in GnomAdExome4 at 2 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TNMD	NM_022144.3	c.298T>C	p.Leu100Leu	synonymous_variant	Exon 3 of 7	ENST00000373031.5	NP_071427.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TNMD	ENST00000373031.5	c.298T>C	p.Leu100Leu	synonymous_variant	Exon 3 of 7	1	NM_022144.3	ENSP00000362122.4
TNMD	ENST00000485971.1	n.389T>C		non_coding_transcript_exon_variant	Exon 1 of 3	3

Frequencies

GnomAD3 genomes Cov.: 21

GnomAD3 exomes AF: 0.0000110 AC: 2 AN: 182363 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 66875

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000245

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000912 AC: 10 AN: 1097055 Hom.: 0 Cov.: 28 AF XY: 0.00000552 AC XY: 2 AN XY: 362461

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000663

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000951

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 21

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

May 01, 2022

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

TNMD: BP4, BP7 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.53
CADD	Benign	7.6
DANN	Benign	0.78

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: rs1219565379; hg19: chrX-99849009;