rs1553923810

Variant names:

• chr4-99549271-A-T
• rs1553923810
• NM_001134665.3:c.837T>A

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2 BP4_Strong BP6_Moderate BP7

The NM_001134665.3(TRMT10A):​c.837T>A​(p.Val279Val) variant causes a synonymous 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 benign (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: TRMT10A NM_001134665.3 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.574
• Publications: 0 publications found

Genes affected

TRMT10A (HGNC:28403): (tRNA methyltransferase 10A) This gene encodes a protein that belongs to the tRNA (Guanine-1)-methyltransferase family. A similar gene in yeast modifies several different tRNA species. Mutations in this gene are associated with microcephaly, short stature, and impaired glucose metabolism. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2014]

TRMT10A Gene-Disease associations (from GenCC):

• microcephaly, short stature, and impaired glucose metabolism 1

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp
• primary microcephaly-mild intellectual disability-young-onset diabetes syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.53).
• BP6: Variant 4-99549271-A-T is Benign according to our data. Variant chr4-99549271-A-T is described in ClinVar as Likely_benign. ClinVar VariationId is 437056.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.574 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRMT10A	NM_001134665.3	c.837T>A	p.Val279Val	synonymous_variant	Exon 8 of 8	ENST00000394876.7	NP_001128137.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TRMT10A	ENST00000394876.7	c.837T>A	p.Val279Val	synonymous_variant	Exon 8 of 8	1	NM_001134665.3	ENSP00000378342.2
TRMT10A	ENST00000273962.7	c.837T>A	p.Val279Val	synonymous_variant	Exon 8 of 8	1		ENSP00000273962.3
TRMT10A	ENST00000394877.7	c.837T>A	p.Val279Val	synonymous_variant	Exon 8 of 8	2		ENSP00000378343.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Jun 08, 2016

Genetic Services Laboratory, University of Chicago

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.53
CADD	Benign	8.0
DANN	Benign	0.74
PhyloP100		0.57

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

Other links and lift over

dbSNP: rs1553923810; hg19: chr4-100470428;