rs199578950

Variant names:

• chr22-24313295-A-G
• rs199578950
• NM_015330.6:c.154-18A>G

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_Strong BP6_Moderate BS2

The NM_015330.6(SPECC1L):​c.154-18A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000131 in 1,613,598 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 0.000079 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00014 (0 hom.)
• Consequence: SPECC1L NM_015330.6 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -1.35
• Publications: 0 publications found

Genes affected

SPECC1L (HGNC:29022): (sperm antigen with calponin homology and coiled-coil domains 1 like) This gene encodes a coiled-coil domain containing protein. The encoded protein may play a critical role in actin-cytoskeletal reorganization during facial morphogenesis. Mutations in this gene are a cause of oblique facial clefting-1. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. A read-through transcript composed of SPECC1L (sperm antigen with calponin homology and coiled-coil domains 1-like) and the downstream ADORA2A (adenosine A2a receptor) gene sequence has been identified, but it is thought to be non-coding. [provided by RefSeq, Jun 2013]

SPECC1L-ADORA2A (HGNC:49185): (SPECC1L-ADORA2A readthrough (NMD candidate)) This locus represents naturally occurring readthrough transcription between the neighboring SPECC1L (sperm antigen with calponin homology and coiled-coil domains 1-like) and ADORA2A (adenosine A2a receptor) genes on chromosome 22. The readthrough transcript is a candidate for nonsense-mediated mRNA decay (NMD) and is unlikely to produce a protein product. [provided by RefSeq, Jun 2013]

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.85).
• BP6: Variant 22-24313295-A-G is Benign according to our data. Variant chr22-24313295-A-G is described in ClinVar as Likely_benign. ClinVar VariationId is 1899965.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS2: High AC in GnomAd4 at 12 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015330.6. 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
	SPECC1L	NM_015330.6	MANE Select	c.154-18A>G		intron	N/A	NP_056145.5	Q69YQ0-1
	SPECC1L	NM_001145468.4		c.154-18A>G		intron	N/A	NP_001138940.4	Q69YQ0-1
	SPECC1L	NM_001254732.3		c.154-18A>G		intron	N/A	NP_001241661.3	Q69YQ0-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SPECC1L	ENST00000314328.14	TSL:1 MANE Select	c.154-18A>G		intron	N/A	ENSP00000325785.8	Q69YQ0-1
	SPECC1L	ENST00000437398.5	TSL:1	c.154-18A>G		intron	N/A	ENSP00000393363.1	Q69YQ0-1
	SPECC1L-ADORA2A	ENST00000358654.2	TSL:2	n.154-18A>G		intron	N/A	ENSP00000351480.2	F8WAN1

Frequencies

GnomAD3 genomes AF: 0.0000790 AC: 12 AN: 151930 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000162

Gnomad OTH AF: 0.000479

GnomAD2 exomes AF: 0.000131 AC: 33 AN: 251104 AF XY: 0.000155

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000273

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.000137 AC: 200 AN: 1461668 Hom.: 0 Cov.: 31 AF XY: 0.000122 AC XY: 89 AN XY: 727152

African (AFR) AF: 0.0000299 AC: 1 AN: 33476

American (AMR) AF: 0.0000447 AC: 2 AN: 44714

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86248

European-Finnish (FIN) AF: 0.0000187 AC: 1 AN: 53412

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5686

European-Non Finnish (NFE) AF: 0.000172 AC: 191 AN: 1111922

Other (OTH) AF: 0.0000828 AC: 5 AN: 60382

GnomAD4 genome AF: 0.0000790 AC: 12 AN: 151930 Hom.: 0 Cov.: 32 AF XY: 0.0000539 AC XY: 4 AN XY: 74200

African (AFR) AF: 0.00 AC: 0 AN: 41328

American (AMR) AF: 0.00 AC: 0 AN: 15246

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3464

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4818

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10570

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.000162 AC: 11 AN: 68002

Other (OTH) AF: 0.000479 AC: 1 AN: 2086

Alfa AF: 0.000214 Hom.: 0

Bravo AF: 0.0000945

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.85
CADD	Benign	5.4
DANN	Benign	0.53
PhyloP100		-1.4

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: rs199578950; hg19: chr22-24709263;