9-97460234-G-A

Position:

• chr9-97460234-G-A

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_Moderate BP6_Very_Strong BP7 BS1 BS2

The NM_014290.3(TDRD7):​c.912G>A​(p.Lys304Lys) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0016 in 1,614,190 control chromosomes in the GnomAD database, including 43 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0086 (23 hom., cov: 32)
  • Exomes 𝑓: 0.00087 (20 hom.)
• Consequence: TDRD7 NM_014290.3 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:4
• Conservation: PhyloP100: 0.594

Genes affected

TDRD7 (HGNC:30831): (tudor domain containing 7) The protein encoded by this gene belongs to the Tudor family of proteins. This protein contains conserved Tudor domains and LOTUS domains. It is a component of RNA granules, which function in RNA processing. Mutations in this gene have been associated with cataract formation in mouse and human. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2014]

ACMG classification

Verdict is Benign. Variant got -19 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.41).
• BP6: Variant 9-97460234-G-A is Benign according to our data. Variant chr9-97460234-G-A is described in ClinVar as [Benign]. Clinvar id is 364066.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=0.594 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00857 (1305/152304) while in subpopulation AFR AF= 0.0302 (1253/41554). AF 95% confidence interval is 0.0288. There are 23 homozygotes in gnomad4. There are 592 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 23 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TDRD7	NM_014290.3	c.912G>A	p.Lys304Lys	synonymous_variant	7/17	ENST00000355295.5	NP_055105.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TDRD7	ENST00000355295.5	c.912G>A	p.Lys304Lys	synonymous_variant	7/17	1	NM_014290.3	ENSP00000347444.4

Frequencies

GnomAD3 genomes AF: 0.00860 AC: 1309 AN: 152186 Hom.: 23 Cov.: 32

Gnomad AFR AF: 0.0303

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00229

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000621

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00525

GnomAD3 exomes AF: 0.00229 AC: 575 AN: 251334 Hom.: 12 AF XY: 0.00155 AC XY: 211 AN XY: 135854

Gnomad AFR exome AF: 0.0323

Gnomad AMR exome AF: 0.00130

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: 0.0000176

Gnomad OTH exome AF: 0.000489

GnomAD4 exome AF: 0.000872 AC: 1275 AN: 1461886 Hom.: 20 Cov.: 32 AF XY: 0.000686 AC XY: 499 AN XY: 727246

Gnomad4 AFR exome AF: 0.0314

Gnomad4 AMR exome AF: 0.00174

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000464

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000360

Gnomad4 OTH exome AF: 0.00167

GnomAD4 genome AF: 0.00857 AC: 1305 AN: 152304 Hom.: 23 Cov.: 32 AF XY: 0.00795 AC XY: 592 AN XY: 74470

Gnomad4 AFR AF: 0.0302

Gnomad4 AMR AF: 0.00229

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000622

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000294

Gnomad4 OTH AF: 0.00520

Alfa AF: 0.00460 Hom.: 8

Bravo AF: 0.00986

Asia WGS AF: 0.00144 AC: 5 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Cataract 36 Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 22, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

not provided Benign:2

Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Feb 04, 2020	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.41
CADD	Benign	6.2
DANN	Benign	0.67

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: rs78579695; hg19: chr9-100222516;