rs552371418

Variant names:

• chr1-151662180-G-A
• rs552371418
• NM_001330723.2:c.816G>A
• SNX27 p.Val272Val

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_Moderate BP6_Moderate BP7 BS1

The NM_001330723.2(SNX27):​c.816G>A​(p.Val272Val) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000812 in 1,613,154 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000083 (1 hom.)
• Consequence: SNX27 NM_001330723.2 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.715
• Publications: 0 publications found

Genes affected

SNX27 (HGNC:20073): (sorting nexin 27) This gene encodes a member of the sorting nexin family, a diverse group of cytoplasmic and membrane-associated proteins involved in endocytosis of plasma membrane receptors and protein trafficking through these compartments. All members of this protein family contain a phosphoinositide binding domain (PX domain). A highly similar protein in mouse is responsible for the specific recruitment of an isoform of serotonin 5-hydroxytryptamine 4 receptor into early endosomes, suggesting the analogous role for the human protein. [provided by RefSeq, Jul 2008]

SNX27 Gene-Disease associations (from GenCC):

• neurodevelopmental disorder

  Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia

ACMG classification

Our verdict: Benign. The variant received -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.39).
• BP6: Variant 1-151662180-G-A is Benign according to our data. Variant chr1-151662180-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 462819.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.715 with no splicing effect.
• BS1: Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.0000657 (10/152258) while in subpopulation SAS AF = 0.00207 (10/4828). AF 95% confidence interval is 0.00112. There are 0 homozygotes in GnomAd4. There are 9 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001330723.2. 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
	SNX27	NM_001330723.2	MANE Select	c.816G>A	p.Val272Val	synonymous	Exon 5 of 12	NP_001317652.1	Q96L92-1
	SNX27	NM_030918.6		c.816G>A	p.Val272Val	synonymous	Exon 5 of 12	NP_112180.4
	SNX27	NM_001437601.1		c.513G>A	p.Val171Val	synonymous	Exon 4 of 11	NP_001424530.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SNX27	ENST00000458013.7	TSL:5 MANE Select	c.816G>A	p.Val272Val	synonymous	Exon 5 of 12	ENSP00000400333.2	Q96L92-1
	SNX27	ENST00000368843.8	TSL:1	c.816G>A	p.Val272Val	synonymous	Exon 5 of 12	ENSP00000357836.3	Q96L92-3
	SNX27	ENST00000368838.2	TSL:1	c.411G>A	p.Val137Val	synonymous	Exon 4 of 10	ENSP00000357831.2	A0A5H1ZRP6

Frequencies

GnomAD3 genomes AF: 0.0000657 AC: 10 AN: 152140 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: 0.00207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000179 AC: 45 AN: 251056 AF XY: 0.000251

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: 0.00

Gnomad OTH exome AF: 0.000326

GnomAD4 exome AF: 0.0000828 AC: 121 AN: 1460896 Hom.: 1 Cov.: 30 AF XY: 0.000124 AC XY: 90 AN XY: 726786

African (AFR) AF: 0.0000299 AC: 1 AN: 33448

American (AMR) AF: 0.00 AC: 0 AN: 44712

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26118

East Asian (EAS) AF: 0.00 AC: 0 AN: 39656

South Asian (SAS) AF: 0.00126 AC: 109 AN: 86220

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53358

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111274

Other (OTH) AF: 0.000182 AC: 11 AN: 60346

GnomAD4 genome AF: 0.0000657 AC: 10 AN: 152258 Hom.: 0 Cov.: 32 AF XY: 0.000121 AC XY: 9 AN XY: 74436

African (AFR) AF: 0.00 AC: 0 AN: 41556

American (AMR) AF: 0.00 AC: 0 AN: 15294

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5180

South Asian (SAS) AF: 0.00207 AC: 10 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10590

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68022

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000151

Asia WGS AF: 0.00202 AC: 7 AN: 3478

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	Severe myoclonic epilepsy in infancy (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.39
CADD	Benign	5.6
DANN	Benign	0.68
PhyloP100		0.71
Mutation Taster		=100/0	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

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

Other links and lift over

dbSNP: rs552371418;

hg19: chr1-151634656;