rs754683531

Variant names:

• chr17-82942460-C-T
• rs754683531
• NM_005993.5:c.3576C>T

Variant summary

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

The NM_005993.5(TBCD):​c.3576C>T​(p.Cys1192Cys) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,644 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: TBCD NM_005993.5 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.891
• Publications: 0 publications found

Genes affected

TBCD (HGNC:11581): (tubulin folding cofactor D) Cofactor D is one of four proteins (cofactors A, D, E, and C) involved in the pathway leading to correctly folded beta-tubulin from folding intermediates. Cofactors A and D are believed to play a role in capturing and stabilizing beta-tubulin intermediates in a quasi-native confirmation. Cofactor E binds to the cofactor D/beta-tubulin complex; interaction with cofactor C then causes the release of beta-tubulin polypeptides that are committed to the native state. [provided by RefSeq, Jul 2008]

QTGAL (HGNC:21727): (UDP-GlcNAc:betaGal beta-1,3-N-acetylglucosaminyltransferase like 1) Predicted to enable glycosyltransferase activity. [provided by Alliance of Genome Resources, Apr 2022]

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=-0.78).
• BP6: Variant 17-82942460-C-T is Benign according to our data. Variant chr17-82942460-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 2775648.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.891 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005993.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TBCD	NM_005993.5	MANE Select	c.3576C>T	p.Cys1192Cys	synonymous	Exon 39 of 39	NP_005984.3
	QTGAL	NM_001009905.3	MANE Select	c.*1614G>A		3_prime_UTR	Exon 13 of 13	NP_001009905.2	Q67FW5
	TBCD	NM_001411101.1		c.3525C>T	p.Cys1175Cys	synonymous	Exon 38 of 38	NP_001398030.1	A0A804HLI2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TBCD	ENST00000355528.9	TSL:1 MANE Select	c.3576C>T	p.Cys1192Cys	synonymous	Exon 39 of 39	ENSP00000347719.4	Q9BTW9-1
	B3GNTL1	ENST00000320865.4	TSL:1 MANE Select	c.*1614G>A		3_prime_UTR	Exon 13 of 13	ENSP00000319979.4	Q67FW5
	TBCD	ENST00000576677.6	TSL:1	n.3726C>T		non_coding_transcript_exon	Exon 16 of 16

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000402 AC: 1 AN: 249010 AF XY: 0.00000740

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.0000995

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461644 Hom.: 0 Cov.: 31 AF XY: 0.00000413 AC XY: 3 AN XY: 727108

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.0000765 AC: 2 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53360

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111854

Other (OTH) AF: 0.0000166 AC: 1 AN: 60374

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.78
CADD	Benign	3.6
DANN	Benign	0.84
PhyloP100		0.89

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: rs754683531; hg19: chr17-80900336;