NM_003238.6:c.-1271A>G

Variant names:

• chr1-218345431-A-G
• rs886045958
• NM_003238.6:c.-1271A>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_003238.6(TGFB2):​c.-1271A>G variant causes a 5 prime UTR 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 Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: TGFB2 NM_003238.6 5_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.557
• Publications: 0 publications found

Genes affected

TGFB2 (HGNC:11768): (transforming growth factor beta 2) 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. Disruption of the TGF-beta/SMAD pathway has been implicated in a variety of human cancers. A chromosomal translocation that includes this gene is associated with Peters' anomaly, a congenital defect of the anterior chamber of the eye. Mutations in this gene may be associated with Loeys-Dietz syndrome. This gene encodes multiple isoforms that may undergo similar proteolytic processing. [provided by RefSeq, Aug 2016]

TGFB2-AS1 (HGNC:50628): (TGFB2 antisense RNA 1 (head to head))

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003238.6. 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
	TGFB2	NM_003238.6	MANE Select	c.-1271A>G		5_prime_UTR	Exon 1 of 7	NP_003229.1	P61812-1
	TGFB2	NM_001135599.4		c.-1271A>G		5_prime_UTR	Exon 1 of 8	NP_001129071.1	P61812-2
	TGFB2	NR_138148.2		n.96A>G		non_coding_transcript_exon	Exon 1 of 7

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TGFB2	ENST00000366930.9	TSL:1 MANE Select	c.-1271A>G		5_prime_UTR	Exon 1 of 7	ENSP00000355897.4	P61812-1
	TGFB2-AS1	ENST00000687392.2		n.557T>C		non_coding_transcript_exon	Exon 1 of 1
	TGFB2-AS1	ENST00000414452.3	TSL:3	n.449-43T>C		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 406 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 300

African (AFR) AF: 0.00 AC: 0 AN: 16

American (AMR) AC: 0 AN: 0

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 2

East Asian (EAS) AF: 0.00 AC: 0 AN: 12

South Asian (SAS) AF: 0.00 AC: 0 AN: 10

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 28

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 304

Other (OTH) AF: 0.00 AC: 0 AN: 32

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000113

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Loeys-Dietz syndrome 4 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	7.3
DANN	Benign	0.76
PhyloP100		0.56
PromoterAI		-0.11	Neutral

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs886045958; hg19: chr1-218518773;