NM_006642.5:c.1744+20T>G

Variant names:

• chr1-243415849-T-G
• rs368472127
• NM_006642.5:c.1744+20T>G

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_Moderate BP6_Very_Strong

The NM_006642.5(SDCCAG8):​c.1744+20T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000126 in 1,611,804 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.000092 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00013 (0 hom.)
• Consequence: SDCCAG8 NM_006642.5 intron
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: 2.91
• Publications: 0 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):

• Senior-Loken syndrome 7

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
• Bardet-Biedl syndrome 16

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp
• Bardet-Biedl syndrome

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

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -10 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.28).
• BP6: Variant 1-243415849-T-G is Benign according to our data. Variant chr1-243415849-T-G is described in ClinVar as Likely_benign. ClinVar VariationId is 260010.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SDCCAG8	NM_006642.5	MANE Select	c.1744+20T>G		intron	N/A	NP_006633.1
	SDCCAG8	NM_001350248.2		c.1840+20T>G		intron	N/A	NP_001337177.1
	SDCCAG8	NM_001350249.2		c.1450+20T>G		intron	N/A	NP_001337178.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SDCCAG8	ENST00000366541.8	TSL:1 MANE Select	c.1744+20T>G		intron	N/A	ENSP00000355499.3
	SDCCAG8	ENST00000435549.1	TSL:1	c.957-10578T>G		intron	N/A	ENSP00000410200.1
	SDCCAG8	ENST00000493334.1	TSL:5	n.*20T>G		downstream_gene	N/A

Frequencies

GnomAD3 genomes AF: 0.0000920 AC: 14 AN: 152220 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000162

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000109 AC: 27 AN: 248318 AF XY: 0.0000969

Gnomad AFR exome AF: 0.0000626

Gnomad AMR exome AF: 0.0000585

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000179

Gnomad OTH exome AF: 0.000497

GnomAD4 exome AF: 0.000129 AC: 189 AN: 1459466 Hom.: 0 Cov.: 33 AF XY: 0.000118 AC XY: 86 AN XY: 725974

African (AFR) AF: 0.00 AC: 0 AN: 33384

American (AMR) AF: 0.000112 AC: 5 AN: 44448

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26072

East Asian (EAS) AF: 0.00 AC: 0 AN: 39636

South Asian (SAS) AF: 0.0000929 AC: 8 AN: 86106

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53348

Middle Eastern (MID) AF: 0.000783 AC: 4 AN: 5110

European-Non Finnish (NFE) AF: 0.000151 AC: 168 AN: 1111140

Other (OTH) AF: 0.0000664 AC: 4 AN: 60222

GnomAD4 genome AF: 0.0000919 AC: 14 AN: 152338 Hom.: 0 Cov.: 33 AF XY: 0.0000940 AC XY: 7 AN XY: 74496

African (AFR) AF: 0.0000240 AC: 1 AN: 41588

American (AMR) AF: 0.00 AC: 0 AN: 15292

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 5186

South Asian (SAS) AF: 0.000414 AC: 2 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10630

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.000162 AC: 11 AN: 68022

Other (OTH) AF: 0.00 AC: 0 AN: 2116

Alfa AF: 0.000217 Hom.: 0

Bravo AF: 0.000117

ClinVar

Significance: Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:1

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Senior-Loken syndrome 7;C3889474:Bardet-Biedl syndrome 16 Benign:1

Jan 13, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

not provided Benign:1

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.28
CADD	Benign	16
DANN	Benign	0.80
PhyloP100		2.9
Mutation Taster		=99/1	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: rs368472127; hg19: chr1-243579151;