9-104768977-C-T

Variant summary

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

The NM_018376.4(NIPSNAP3B):c.386C>T(p.Thr129Ile) 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. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: NIPSNAP3B NM_018376.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.295

Genes affected

NIPSNAP3B (HGNC:23641): (nipsnap homolog 3B) NIPSNAP3B belongs to a family of proteins with putative roles in vesicular trafficking (Buechler et al., 2004 [PubMed 15177564]).[supplied by OMIM, Mar 2008]

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=0.08662787).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NIPSNAP3B	NM_018376.4	c.386C>T	p.Thr129Ile	missense_variant	3/6	ENST00000374762.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NIPSNAP3B	ENST00000374762.4	c.386C>T	p.Thr129Ile	missense_variant	3/6	1	NM_018376.4	P1
NIPSNAP3B	ENST00000461177.1	n.221C>T		non_coding_transcript_exon_variant	2/6	3
NIPSNAP3B	ENST00000460936.5	c.386C>T	p.Thr129Ile	missense_variant, NMD_transcript_variant	3/6	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

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

Mar 06, 2023

The c.386C>T (p.T129I) alteration is located in exon 3 (coding exon 3) of the NIPSNAP3B gene. This alteration results from a C to T substitution at nucleotide position 386, causing the threonine (T) at amino acid position 129 to be replaced by an isoleucine (I). 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	0.21
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.57
Cadd	Benign	19
Dann	Uncertain	0.98
DEOGEN2	Benign	0.012	T
Eigen	Benign	-0.68
Eigen_PC	Benign	-0.77
FATHMM_MKL	Benign	0.013	N
LIST_S2	Benign	0.85	D
M_CAP	Benign	0.014	T
MetaRNN	Benign	0.087	T
MetaSVM	Benign	-0.89	T
MutationAssessor	Uncertain	2.1	M
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.42	T
PROVEAN	Benign	-1.8	N
REVEL	Benign	0.082
Sift	Benign	0.12	T
Sift4G	Uncertain	0.039	D
Polyphen		0.031	B
Vest4		0.075
MutPred		0.54		Gain of sheet (P = 0.0149);
MVP		0.39
MPC		0.038
ClinPred		0.18	T
GERP RS		0.65
Varity_R		0.14
gMVP		0.51

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: chr9-107531258; COSMIC: COSV104688346;