15-66744644-C-T

Variant names:

• chr15-66744644-C-T
• rs7161970
• NM_005585.5:c.952+28146C>T

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_005585.5(SMAD6):​c.952+28146C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.293 in 152,178 control chromosomes in the GnomAD database, including 6,854 homozygotes. 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: 𝑓 0.29 (6854 hom., cov: 33)
• Consequence: SMAD6 NM_005585.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.753
• Publications: 4 publications found

Genes affected

SMAD6 (HGNC:6772): (SMAD family member 6) The protein encoded by this gene belongs to the SMAD family of proteins, which are related to Drosophila 'mothers against decapentaplegic' (Mad) and C. elegans Sma. SMAD proteins are signal transducers and transcriptional modulators that mediate multiple signaling pathways. This protein functions in the negative regulation of BMP and TGF-beta/activin-signalling. Multiple transcript variants have been found for this gene.[provided by RefSeq, Sep 2014]

SMAD6 Gene-Disease associations (from GenCC):

• syndromic craniosynostosis

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• craniosynostosis 7

  Inheritance: AD, Unknown Classification: STRONG, MODERATE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), PanelApp Australia, Ambry Genetics
• radioulnar synostosis, nonsyndromic, susceptibility to

  Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics, PanelApp Australia
• aortic valve disease 2

  Inheritance: AD, Unknown Classification: MODERATE, LIMITED Submitted by: Ambry Genetics, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• familial bicuspid aortic valve

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• congenital radioulnar synostosis

  Inheritance: Unknown, AR Classification: SUPPORTIVE, LIMITED Submitted by: Orphanet, Ambry Genetics
• congenital heart defects, multiple types

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.423 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005585.5. 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
	SMAD6	NM_005585.5	MANE Select	c.952+28146C>T		intron	N/A	NP_005576.3
	SMAD6	NR_027654.2		n.2107+27504C>T		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SMAD6	ENST00000288840.10	TSL:1 MANE Select	c.952+28146C>T		intron	N/A	ENSP00000288840.5	O43541-1
	SMAD6	ENST00000557916.5	TSL:1	n.*67+27504C>T		intron	N/A	ENSP00000452955.1	O43541-4
	SMAD6	ENST00000966143.1		c.874+32920C>T		intron	N/A	ENSP00000636202.1

Frequencies

GnomAD3 genomes AF: 0.294 AC: 44651 AN: 152058 Hom.: 6855 Cov.: 33

Gnomad AFR AF: 0.207

Gnomad AMI AF: 0.347

Gnomad AMR AF: 0.242

Gnomad ASJ AF: 0.352

Gnomad EAS AF: 0.438

Gnomad SAS AF: 0.244

Gnomad FIN AF: 0.347

Gnomad MID AF: 0.225

Gnomad NFE AF: 0.339

Gnomad OTH AF: 0.304

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.293 AC: 44651 AN: 152178 Hom.: 6854 Cov.: 33 AF XY: 0.292 AC XY: 21727 AN XY: 74396

African (AFR) AF: 0.206 AC: 8575 AN: 41540

American (AMR) AF: 0.242 AC: 3698 AN: 15286

Ashkenazi Jewish (ASJ) AF: 0.352 AC: 1223 AN: 3472

East Asian (EAS) AF: 0.438 AC: 2263 AN: 5166

South Asian (SAS) AF: 0.245 AC: 1181 AN: 4830

European-Finnish (FIN) AF: 0.347 AC: 3675 AN: 10590

Middle Eastern (MID) AF: 0.211 AC: 62 AN: 294

European-Non Finnish (NFE) AF: 0.339 AC: 23017 AN: 67976

Other (OTH) AF: 0.303 AC: 641 AN: 2114

Alfa AF: 0.320 Hom.: 1692

Bravo AF: 0.285

Asia WGS AF: 0.352 AC: 1220 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	1.3
DANN	Benign	0.69
PhyloP100		-0.75
Mutation Taster		=100/0	polymorphism (auto)

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs7161970;

hg19: chr15-67036982;