rs142355730

Variant names:

• chr14-74480120-C-G
• rs142355730
• NM_006432.5:c.*154G>C

Your query was ambiguous. Multiple possible variants found:

• chr14-74480120-C-G
• chr14-74480120-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_006432.5(NPC2):​c.*154G>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000709 in 1,410,224 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: NPC2 NM_006432.5 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.103
• Publications: 2 publications found

Genes affected

NPC2 (HGNC:14537): (NPC intracellular cholesterol transporter 2) This gene encodes a protein containing a lipid recognition domain. The encoded protein may function in regulating the transport of cholesterol through the late endosomal/lysosomal system. Mutations in this gene have been associated with Niemann-Pick disease, type C2 and frontal lobe atrophy. [provided by RefSeq, Jul 2008]

SYNDIG1L (HGNC:32388): (synapse differentiation inducing 1 like) Predicted to be located in Golgi apparatus. Predicted to be integral component of membrane. Predicted to be active in intracellular membrane-bounded organelle and membrane. [provided by Alliance of Genome Resources, Apr 2022]

MIR4709 (HGNC:41690): (microRNA 4709) microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. [provided by RefSeq, Sep 2009]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12994447).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006432.5. 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
	NPC2	NM_006432.5	MANE Select	c.*154G>C		3_prime_UTR	Exon 5 of 5	NP_006423.1	A0A024R6C0
	NPC2	NM_001363688.1		c.*498G>C		3_prime_UTR	Exon 4 of 4	NP_001350617.1	G3V3E8
	NPC2	NM_001375440.1		c.*154G>C		3_prime_UTR	Exon 4 of 4	NP_001362369.1	P61916-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NPC2	ENST00000555619.6	TSL:1 MANE Select	c.*154G>C		3_prime_UTR	Exon 5 of 5	ENSP00000451112.2	P61916-1
	NPC2	ENST00000553490.5	TSL:2	c.626G>C	p.Arg209Pro	missense	Exon 5 of 5	ENSP00000451180.1	G3V3D1
	NPC2	ENST00000556009.5	TSL:5	c.*154G>C		3_prime_UTR	Exon 5 of 5	ENSP00000450502.1	H0YIZ1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000575 AC: 1 AN: 174000 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000135

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 7.09e-7 AC: 1 AN: 1410224 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 697670

African (AFR) AF: 0.00 AC: 0 AN: 32132

American (AMR) AF: 0.00 AC: 0 AN: 37452

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25292

East Asian (EAS) AF: 0.00 AC: 0 AN: 36702

South Asian (SAS) AF: 0.00 AC: 0 AN: 80622

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 44182

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5718

European-Non Finnish (NFE) AF: 9.18e-7 AC: 1 AN: 1089340

Other (OTH) AF: 0.00 AC: 0 AN: 58784

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.034	T
BayesDel_noAF	Benign	-0.29
CADD	Benign	2.5
DANN	Benign	0.47
Eigen	Benign	-0.60
Eigen_PC	Benign	-0.76
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.26	T
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-0.39	T
PhyloP100		-0.10
PROVEAN	Benign	-0.010	N
REVEL	Benign	0.14
Sift	Benign	0.36	T
MutPred		0.39		Loss of MoRF binding (P = 0.0024)
MVP		0.52
ClinPred		0.031	T
GERP RS		-0.036
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs142355730; hg19: chr14-74946823;