chr22-26169685-C-A

Position:

• chr22-26169685-C-A

Variant summary

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

The NM_021115.5(SEZ6L):​c.16C>A​(p.Pro6Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: SEZ6L NM_021115.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.632

Genes affected

SEZ6L (HGNC:10763): (seizure related 6 homolog like) Predicted to act upstream of or within adult locomotory behavior; nervous system development; and regulation of protein kinase C signaling. Predicted to be located in endoplasmic reticulum and neuronal cell body. [provided by Alliance of Genome Resources, Apr 2022]

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=0.2350052).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SEZ6L	NM_021115.5	c.16C>A	p.Pro6Thr	missense_variant	1/17	ENST00000248933.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SEZ6L	ENST00000248933.11	c.16C>A	p.Pro6Thr	missense_variant	1/17	1	NM_021115.5	P4

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1163584 Hom.: 0 Cov.: 28 AF XY: 0.00 AC XY: 0 AN XY: 564586

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 22, 2021

The c.16C>A (p.P6T) alteration is located in exon 1 (coding exon 1) of the SEZ6L gene. This alteration results from a C to A substitution at nucleotide position 16, causing the proline (P) at amino acid position 6 to be replaced by a threonine (T). 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	0.13
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.39
CADD	Benign	22
DANN	Uncertain	0.99
Eigen	Uncertain	0.22
Eigen_PC	Uncertain	0.23
FATHMM_MKL	Benign	0.60	D
LIST_S2	Benign	0.68	T;T;T;T;T;T
M_CAP	Pathogenic	0.30	D
MetaRNN	Benign	0.24	T;T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.69	N;.;N;N;N;N
MutationTaster	Benign	0.97	N;N;N;N;N
PrimateAI	Pathogenic	0.82	D
PROVEAN	Benign	0.12	N;N;N;.;N;N
REVEL	Benign	0.10
Sift	Pathogenic	0.0	D;D;D;.;D;D
Sift4G	Pathogenic	0.0	D;D;D;D;D;D
Polyphen		1.0	.;D;D;.;D;D
Vest4		0.30
MutPred		0.26		Gain of phosphorylation at P6 (P = 0.0265);Gain of phosphorylation at P6 (P = 0.0265);Gain of phosphorylation at P6 (P = 0.0265);Gain of phosphorylation at P6 (P = 0.0265);Gain of phosphorylation at P6 (P = 0.0265);Gain of phosphorylation at P6 (P = 0.0265);
MVP		0.043
MPC		0.11
ClinPred		0.86	D
GERP RS		3.7
Varity_R		0.17
gMVP		0.37

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr22-26565651;