chr1-235805999-T-A

Position:

• chr1-235805999-T-A

Variant summary

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

The NM_000081.4(LYST):​c.3137A>T​(p.Asp1046Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,662 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D1046G) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: LYST NM_000081.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.25

Genes affected

LYST (HGNC:1968): (lysosomal trafficking regulator) This gene encodes a protein that regulates intracellular protein trafficking in endosomes, and may be involved in pigmentation. Mutations in this gene are associated with Chediak-Higashi syndrome, a lysosomal storage disorder. Alternative splicing results in multiple transcript variants, though the full-length nature of some of these variants has not been determined. [provided by RefSeq, Apr 2013]

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=0.14344323).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LYST	NM_000081.4	c.3137A>T	p.Asp1046Val	missense_variant	6/53	ENST00000389793.7	NP_000072.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LYST	ENST00000389793.7	c.3137A>T	p.Asp1046Val	missense_variant	6/53	5	NM_000081.4	ENSP00000374443.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461662 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727136

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000447

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.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.033	T
BayesDel_noAF	Benign	-0.29
CADD	Benign	12
DANN	Benign	0.90
DEOGEN2	Benign	0.18	T;.
Eigen	Benign	-0.64
Eigen_PC	Benign	-0.66
FATHMM_MKL	Benign	0.24	N
LIST_S2	Benign	0.81	T;T
M_CAP	Benign	0.031	D
MetaRNN	Benign	0.14	T;T
MetaSVM	Benign	-0.92	T
MutationAssessor	Benign	1.9	M;.
PrimateAI	Benign	0.22	T
PROVEAN	Uncertain	-2.6	D;D
REVEL	Benign	0.24
Sift	Uncertain	0.0080	D;D
Sift4G	Uncertain	0.025	D;D
Polyphen		0.29	B;.
Vest4		0.31
MutPred		0.16		Loss of solvent accessibility (P = 0.0159);Loss of solvent accessibility (P = 0.0159);
MVP		0.50
MPC		0.19
ClinPred		0.39	T
GERP RS		2.2
Varity_R		0.16
gMVP		0.22

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: rs376134468; hg19: chr1-235969299;