STX16 p.Thr33Thr

Variant names:

• chr20-58652102-C-C
• ENST00000371141.8:c.

Your query was ambiguous. Multiple possible variants found:

• chr20-58652103--
• chr20-58652105-C-T
• chr20-58652105-C-A
• chr20-58652105-C-G

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The ENST00000371141.8(STX16):​c. variant causes a exon region change. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: STX16 ENST00000371141.8 exon_region
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.90
• Publications: 0 publications found

Genes affected

STX16 (HGNC:11431): (syntaxin 16) This gene encodes a protein that is a member of the syntaxin or t-SNARE (target-SNAP receptor) family. These proteins are found on cell membranes and serve as the targets for V-SNARES (vesicle-SNAP receptors) permitting specific synaptic vesicle docking and fusion. A microdeletion in the region of chromosome 20 where this gene is located has been associated with pseudohypoparathyroidism type Ib. Multiple transcript variants have been found for this gene. Read-through transcription also exists between this gene and the neighboring downstream aminopeptidase-like 1 (NPEPL1) gene. [provided by RefSeq, Mar 2011]

STX16-NPEPL1 (HGNC:41993): (STX16-NPEPL1 readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring syntaxin 16 (STX16) and aminopeptidase-like 1 (NPEPL1) genes on chromosome 20. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD), and is thus unlikely to produce a protein product. [provided by RefSeq, Mar 2011]

ENSG00000309781 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000371141.8. 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
There are no transcript annotations for this variant.

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	STX16	ENST00000371141.8	TSL:2 MANE Select	c.		exon_region	Exon 1 of 9	ENSP00000360183.4	O14662-1
	STX16	ENST00000358029.8	TSL:1	c.		exon_region	Exon 1 of 8	ENSP00000350723.4	O14662-5
	STX16	ENST00000371132.8	TSL:1	c.		exon_region	Exon 1 of 8	ENSP00000360173.4	O14662-2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.9

Splicing

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

hg19: chr20-57227158;