chr1-243256184-C-A

Variant names:

• chr1-243256184-C-A
• rs756729603
• NM_006642.5:c.11C>A

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_006642.5(SDCCAG8):​c.11C>A​(p.Ser4Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,790 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S4F) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: SDCCAG8 NM_006642.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.33
• Publications: 1 publications found

Genes affected

SDCCAG8 (HGNC:10671): (SHH signaling and ciliogenesis regulator SDCCAG8) This gene encodes a centrosome associated protein. This protein may be involved in organizing the centrosome during interphase and mitosis. Mutations in this gene are associated with retinal-renal ciliopathy. [provided by RefSeq, Oct 2010]

SDCCAG8 Gene-Disease associations (from GenCC):

• Bardet-Biedl syndrome 16

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics, Genomics England PanelApp
• Senior-Loken syndrome 7

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• ciliopathy

  Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia
• Bardet-Biedl syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• Senior-Loken syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.33294868).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006642.5. 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
	SDCCAG8	NM_006642.5	MANE Select	c.11C>A	p.Ser4Tyr	missense	Exon 1 of 18	NP_006633.1	Q86SQ7-1
	SDCCAG8	NM_001350248.2		c.11C>A	p.Ser4Tyr	missense	Exon 1 of 19	NP_001337177.1
	SDCCAG8	NM_001350249.2		c.-297C>A		5_prime_UTR	Exon 1 of 18	NP_001337178.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SDCCAG8	ENST00000366541.8	TSL:1 MANE Select	c.11C>A	p.Ser4Tyr	missense	Exon 1 of 18	ENSP00000355499.3	Q86SQ7-1
	SDCCAG8	ENST00000884080.1		c.11C>A	p.Ser4Tyr	missense	Exon 1 of 19	ENSP00000554139.1
	SDCCAG8	ENST00000951623.1		c.11C>A	p.Ser4Tyr	missense	Exon 1 of 18	ENSP00000621682.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000795 AC: 2 AN: 251478 AF XY: 0.00000736

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

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: 0.00000205 AC: 3 AN: 1461790 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727210

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

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

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

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

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

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1111920

Other (OTH) AF: 0.00 AC: 0 AN: 60390

GnomAD4 genome Cov.: 33

ExAC AF: 0.00000824 AC: 1

EpiCase AF: 0.0000545

EpiControl AF: 0.000119

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.037	T
BayesDel_noAF	Benign	-0.28
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.016	T
Eigen	Uncertain	0.65
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Uncertain	0.85	D
M_CAP	Benign	0.030	D
MetaRNN	Benign	0.33	T
MetaSVM	Benign	-0.58	T
MutationAssessor	Benign	1.9	M
PhyloP100		3.3
PrimateAI	Benign	0.48	T
PROVEAN	Benign	-1.3	N
REVEL	Benign	0.14
Sift	Uncertain	0.0030	D
Sift4G	Uncertain	0.027	D
Polyphen		0.99	D
Vest4		0.40
MutPred		0.21		Loss of disorder (P = 0.0349)
MVP		0.71
MPC		0.31
ClinPred		0.95	D
GERP RS		5.4
PromoterAI		0.032	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Varity_R		0.35
gMVP		0.31
Mutation Taster		=55/45	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: rs756729603; hg19: chr1-243419486; COSMIC: COSV59413474; COSMIC: COSV59413474;