14-75959178-C-T

Variant names:

• chr14-75959178-C-T
• rs4252346
• NM_003239.5:c.*9G>A

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_003239.5(TGFB3):​c.*9G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00112 in 1,614,088 control chromosomes in the GnomAD database, including 18 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0063 (9 hom., cov: 32)
  • Exomes 𝑓: 0.00058 (9 hom.)
• Consequence: TGFB3 NM_003239.5 3_prime_UTR
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: 1.87
• Publications: 1 publications found

Genes affected

TGFB3 (HGNC:11769): (transforming growth factor beta 3) This gene encodes a secreted ligand of the TGF-beta (transforming growth factor-beta) superfamily of proteins. Ligands of this family bind various TGF-beta receptors leading to recruitment and activation of SMAD family transcription factors that regulate gene expression. The encoded preproprotein is proteolytically processed to generate a latency-associated peptide (LAP) and a mature peptide, and is found in either a latent form composed of a mature peptide homodimer, a LAP homodimer, and a latent TGF-beta binding protein, or in an active form consisting solely of the mature peptide homodimer. The mature peptide may also form heterodimers with other TGF-beta family members. This protein is involved in embryogenesis and cell differentiation, and may play a role in wound healing. Mutations in this gene are a cause of aortic aneurysms and dissections, as well as familial arrhythmogenic right ventricular dysplasia 1. [provided by RefSeq, Aug 2016]

IFT43 (HGNC:29669): (intraflagellar transport 43) This gene encodes a subunit of the intraflagellar transport complex A (IFT-A). IFT-A is a multiprotein complex that plays an important role in cilia assembly and maintenance by mediating retrograde ciliary transport. Mutations in this gene are a cause of cranioectodermal dysplasia-3 (CED3), also known as Sensenbrenner syndrome. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2011]

IFT43 Gene-Disease associations (from GenCC):

• cranioectodermal dysplasia 3

  Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
• short-rib thoracic dysplasia 18 with polydactyly

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• cranioectodermal dysplasia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• ciliopathy

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics
• retinitis pigmentosa 81

  Inheritance: AR, Unknown Classification: LIMITED Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Benign. The variant received -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BP6: Variant 14-75959178-C-T is Benign according to our data. Variant chr14-75959178-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 386379.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0063 (959/152282) while in subpopulation AFR AF = 0.0216 (898/41554). AF 95% confidence interval is 0.0204. There are 9 homozygotes in GnomAd4. There are 427 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 9 AD,AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003239.5. 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
	TGFB3	NM_003239.5	MANE Select	c.*9G>A		3_prime_UTR	Exon 7 of 7	NP_003230.1	A5YM40
	TGFB3	NM_001329939.2		c.*9G>A		3_prime_UTR	Exon 8 of 8	NP_001316868.1	A5YM40

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TGFB3	ENST00000238682.8	TSL:1 MANE Select	c.*9G>A		3_prime_UTR	Exon 7 of 7	ENSP00000238682.3	P10600-1
	TGFB3	ENST00000964917.1		c.*9G>A		3_prime_UTR	Exon 8 of 8	ENSP00000634976.1
	TGFB3	ENST00000556674.2	TSL:3	c.*9G>A		3_prime_UTR	Exon 8 of 8	ENSP00000502685.1	P10600-1

Frequencies

GnomAD3 genomes AF: 0.00628 AC: 955 AN: 152164 Hom.: 8 Cov.: 32

Gnomad AFR AF: 0.0216

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00288

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00527

GnomAD2 exomes AF: 0.00146 AC: 368 AN: 251462 AF XY: 0.00115

Gnomad AFR exome AF: 0.0201

Gnomad AMR exome AF: 0.00113

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000584 AC: 853 AN: 1461806 Hom.: 9 Cov.: 30 AF XY: 0.000495 AC XY: 360 AN XY: 727202

African (AFR) AF: 0.0206 AC: 690 AN: 33478

American (AMR) AF: 0.00141 AC: 63 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.0000348 AC: 3 AN: 86248

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53396

Middle Eastern (MID) AF: 0.000693 AC: 4 AN: 5768

European-Non Finnish (NFE) AF: 0.0000198 AC: 22 AN: 1111974

Other (OTH) AF: 0.00118 AC: 71 AN: 60388

GnomAD4 genome AF: 0.00630 AC: 959 AN: 152282 Hom.: 9 Cov.: 32 AF XY: 0.00574 AC XY: 427 AN XY: 74448

African (AFR) AF: 0.0216 AC: 898 AN: 41554

American (AMR) AF: 0.00288 AC: 44 AN: 15294

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5184

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10604

Middle Eastern (MID) AF: 0.00340 AC: 1 AN: 294

European-Non Finnish (NFE) AF: 0.0000735 AC: 5 AN: 68040

Other (OTH) AF: 0.00521 AC: 11 AN: 2110

Alfa AF: 0.00282 Hom.: 2

Bravo AF: 0.00720

Asia WGS AF: 0.00231 AC: 8 AN: 3478

ClinVar

ClinVar submissions as Germline

Significance: Benign/Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	1	Familial thoracic aortic aneurysm and aortic dissection (1)
-	-	1	not provided (1)
-	-	1	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	15
DANN	Benign	0.88
PhyloP100		1.9
Mutation Taster		=100/0	polymorphism

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: rs4252346; hg19: chr14-76425521;