3-94015019-C-G
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_001001850.3(STX19):c.251G>C(p.Arg84Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000217 in 1,613,884 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000023 ( 0 hom. )
Consequence
STX19
NM_001001850.3 missense
NM_001001850.3 missense
Scores
4
8
7
Clinical Significance
Conservation
PhyloP100: 5.59
Genes affected
STX19 (HGNC:19300): (syntaxin 19) Predicted to enable SNAP receptor activity and SNARE binding activity. Predicted to be involved in intracellular protein transport; synaptic vesicle fusion to presynaptic active zone membrane; and vesicle docking. Predicted to be part of SNARE complex. Predicted to be active in presynaptic active zone membrane and synaptic vesicle. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]
ARL13B (HGNC:25419): (ADP ribosylation factor like GTPase 13B) This gene encodes a member of the ADP-ribosylation factor-like family. The encoded protein is a small GTPase that contains both N-terminal and C-terminal guanine nucleotide-binding motifs. This protein is localized in the cilia and plays a role in cilia formation and in maintenance of cilia. Mutations in this gene are the cause of Joubert syndrome 8. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Mar 2010]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 2 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
STX19 | NM_001001850.3 | c.251G>C | p.Arg84Thr | missense_variant | 2/2 | ENST00000315099.3 | |
ARL13B | NM_001174150.2 | c.380+11111C>G | intron_variant | ENST00000394222.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
STX19 | ENST00000315099.3 | c.251G>C | p.Arg84Thr | missense_variant | 2/2 | 1 | NM_001001850.3 | P1 | |
ARL13B | ENST00000394222.8 | c.380+11111C>G | intron_variant | 1 | NM_001174150.2 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.00000657 AC: 1AN: 152146Hom.: 0 Cov.: 33
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GnomAD3 exomes AF: 0.0000398 AC: 10AN: 250988Hom.: 0 AF XY: 0.0000516 AC XY: 7AN XY: 135712
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GnomAD4 exome AF: 0.0000233 AC: 34AN: 1461738Hom.: 0 Cov.: 32 AF XY: 0.0000193 AC XY: 14AN XY: 727162
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GnomAD4 genome ? AF: 0.00000657 AC: 1AN: 152146Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1AN XY: 74306
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Nov 17, 2023 | The c.251G>C (p.R84T) alteration is located in exon 2 (coding exon 1) of the STX19 gene. This alteration results from a G to C substitution at nucleotide position 251, causing the arginine (R) at amino acid position 84 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
Cadd
Pathogenic
Dann
Uncertain
DEOGEN2
Benign
T
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Pathogenic
D
LIST_S2
Uncertain
D
M_CAP
Benign
D
MetaRNN
Uncertain
D
MetaSVM
Benign
T
MutationAssessor
Pathogenic
M
MutationTaster
Benign
D;D;D;D;D;D
PrimateAI
Uncertain
T
PROVEAN
Uncertain
D
REVEL
Uncertain
Sift
Benign
T
Sift4G
Pathogenic
D
Polyphen
D
Vest4
MutPred
Loss of phosphorylation at S86 (P = 0.0658);
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at