NM_181486.4:c.663+36G>C

Variant names:

• chr12-114394705-C-G
• rs2236017
• NM_181486.4:c.663+36G>C

Variant summary

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

The NM_181486.4(TBX5):​c.663+36G>C variant causes a intron 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 31)
• Consequence: TBX5 NM_181486.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.956
• Publications: 14 publications found

Genes affected

TBX5 (HGNC:11604): (T-box transcription factor 5) This gene is a member of a phylogenetically conserved family of genes that share a common DNA-binding domain, the T-box. T-box genes encode transcription factors involved in the regulation of developmental processes. This gene is closely linked to related family member T-box 3 (ulnar mammary syndrome) on human chromosome 12. The encoded protein may play a role in heart development and specification of limb identity. Mutations in this gene have been associated with Holt-Oram syndrome, a developmental disorder affecting the heart and upper limbs. Several transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Jul 2008]

TBX5 Gene-Disease associations (from GenCC):

• Holt-Oram syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Orphanet, G2P, Ambry Genetics
• heart conduction disease

  Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp

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=-0.84).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TBX5	NM_181486.4	c.663+36G>C		intron_variant	Intron 6 of 8	ENST00000405440.7	NP_852259.1
TBX5	NM_000192.3	c.663+36G>C		intron_variant	Intron 6 of 8		NP_000183.2
TBX5	NM_080717.4	c.513+36G>C		intron_variant	Intron 5 of 7		NP_542448.1
TBX5	XM_017019912.2	c.711+36G>C		intron_variant	Intron 6 of 8		XP_016875401.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TBX5	ENST00000405440.7	c.663+36G>C		intron_variant	Intron 6 of 8	1	NM_181486.4	ENSP00000384152.3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 39

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	0.19
DANN	Benign	0.53
PhyloP100		-0.96

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: rs2236017; hg19: chr12-114832510;