Genetic Variant SNX29:p.Leu135Pro (chr16-12043053-T-C) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_032167.5(SNX29):c.404T>C(p.Leu135Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,088 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

SNX29
NM_032167.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.60

Publications

0 publications found

Variant links:

Genes affected

SNX29 (HGNC:30542): (sorting nexin 29) Predicted to enable phosphatidylinositol binding activity. [provided by Alliance of Genome Resources, Apr 2022]

SNX29 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.899

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SNX29	NM_032167.5 link	c.404T>C	p.Leu135Pro	missense_variant	Exon 5 of 21	ENST00000566228.6	NP_115543.3	Q8TEQ0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SNX29	ENST00000566228.6 link	c.404T>C	p.Leu135Pro	missense_variant	Exon 5 of 21	5	NM_032167.5	ENSP00000456480.1	Q8TEQ0-1
SNX29	ENST00000564111.5 link	n.466T>C		non_coding_transcript_exon_variant	Exon 5 of 8	2
SNX29	ENST00000568359.1 link	n.235T>C		non_coding_transcript_exon_variant	Exon 2 of 5	5
SNX29	ENST00000569801.5 link	n.*235T>C		downstream_gene_variant		4		ENSP00000457085.1	H3BT98

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461088

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726868

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33456

American (AMR)

AF:

0.00

AC:

AN:

44706

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26124

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86222

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53328

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5400

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111814

Other (OTH)

AF:

0.00

AC:

AN:

60338

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 22, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.404T>C (p.L135P) alteration is located in exon 1 (coding exon 1) of the SNX29 gene. This alteration results from a T to C substitution at nucleotide position 404, causing the leucine (L) at amino acid position 135 to be replaced by a proline (P). 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

Pathogenic

0.98

BayesDel_addAF

Pathogenic

0.29

BayesDel_noAF

Pathogenic

0.18

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.33

Eigen

Uncertain

0.50

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.87

M_CAP

Uncertain

0.17

MetaRNN

Pathogenic

0.90

MetaSVM

Uncertain

-0.14

MutationAssessor

Pathogenic

3.0

PhyloP100

7.6

PrimateAI

Pathogenic

0.81

PROVEAN

Uncertain

-3.9

Sift

Uncertain

0.0060

Sift4G

Uncertain

0.0050

Vest4

0.96

MVP

0.61

ClinPred

0.99

GERP RS

4.9

Varity_R

0.86

gMVP

0.92

Mutation Taster

=29/71

disease causing

(source)

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

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16-12043053-T-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over