1-151612232-C-T

Position:

• chr1-151612232-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001330723.2(SNX27):​c.31C>T​(p.Pro11Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000798 in 1,252,834 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. P11P) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 8.0e-7 (0 hom.)
• Consequence: SNX27 NM_001330723.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.60

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]

(HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.17035112).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SNX27	NM_001330723.2	c.31C>T	p.Pro11Ser	missense_variant	1/12	ENST00000458013.7
LOC124904420	XR_007066622.1	n.346G>A		non_coding_transcript_exon_variant	2/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SNX27	ENST00000458013.7	c.31C>T	p.Pro11Ser	missense_variant	1/12	5	NM_001330723.2	P1
	ENST00000504583.2	n.341G>A		non_coding_transcript_exon_variant	2/2	4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.98e-7 AC: 1 AN: 1252834 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 610962

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.88e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 31, 2023

The c.31C>T (p.P11S) alteration is located in exon 1 (coding exon 1) of the SNX27 gene. This alteration results from a C to T substitution at nucleotide position 31, causing the proline (P) at amino acid position 11 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.066
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.39
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.041	.;.;T
Eigen	Benign	-0.32
Eigen_PC	Benign	-0.14
FATHMM_MKL	Benign	0.19	N
LIST_S2	Benign	0.78	T;T;T
M_CAP	Pathogenic	0.56	D
MetaRNN	Benign	0.17	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.0	.;N;N
MutationTaster	Benign	0.68	D;D
PrimateAI	Pathogenic	0.87	D
PROVEAN	Benign	-0.13	.;N;N
REVEL	Benign	0.051
Sift	Uncertain	0.023	.;D;D
Sift4G	Benign	0.68	.;T;T
Polyphen		0.0	.;B;.
Vest4		0.050, 0.054
MutPred		0.24		Gain of sheet (P = 0.0266);Gain of sheet (P = 0.0266);Gain of sheet (P = 0.0266);
MVP		0.21
MPC		0.60
ClinPred		0.36	T
GERP RS		3.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.11
gMVP		0.36

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

Publications

LitVar

Other links and lift over

dbSNP: rs1667205829; hg19: chr1-151584708;