NM_015175.3:c.339G>C

Variant names:

• chr3-46989154-G-C
• NM_015175.3:c.339G>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_015175.3(NBEAL2):​c.339G>C​(p.Lys113Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,614 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 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)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: NBEAL2 NM_015175.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.783
• Publications: 0 publications found

Genes affected

NBEAL2 (HGNC:31928): (neurobeachin like 2) The protein encoded by this gene contains a beige and Chediak-Higashi (BEACH) domain and multiple WD40 domains, and may play a role in megakaryocyte alpha-granule biogenesis. Mutations in this gene are a cause of gray platelet syndrome. [provided by RefSeq, Dec 2011]

NBEAL2 Gene-Disease associations (from GenCC):

• gray platelet syndrome

  Inheritance: AR, AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Orphanet, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.042072207).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015175.3. 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
	NBEAL2	NM_015175.3	MANE Select	c.339G>C	p.Lys113Asn	missense	Exon 4 of 54	NP_055990.1	Q6ZNJ1-1
	NBEAL2	NM_001365116.2		c.318G>C	p.Lys106Asn	missense	Exon 4 of 53	NP_001352045.1	A0A494C1V1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NBEAL2	ENST00000450053.8	TSL:2 MANE Select	c.339G>C	p.Lys113Asn	missense	Exon 4 of 54	ENSP00000415034.2	Q6ZNJ1-1
	NBEAL2	ENST00000651747.1		c.318G>C	p.Lys106Asn	missense	Exon 4 of 53	ENSP00000499216.1	A0A494C1V1
	NBEAL2	ENST00000933460.1		c.339G>C	p.Lys113Asn	missense	Exon 4 of 52	ENSP00000603519.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461614 Hom.: 0 Cov.: 33 AF XY: 0.00000413 AC XY: 3 AN XY: 727084

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44708

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26126

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86246

European-Finnish (FIN) AF: 0.0000187 AC: 1 AN: 53382

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000360 AC: 4 AN: 1111838

Other (OTH) AF: 0.00 AC: 0 AN: 60370

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.60
CADD	Benign	1.3
DANN	Benign	0.31
DEOGEN2	Benign	0.026	T
Eigen	Benign	-1.5
Eigen_PC	Benign	-1.5
FATHMM_MKL	Benign	0.10	N
LIST_S2	Benign	0.60	T
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.042	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	N
PhyloP100		-0.78
PrimateAI	Benign	0.24	T
PROVEAN	Benign	-0.70	N
REVEL	Benign	0.026
Sift	Benign	0.63	T
Polyphen		0.011	B
Vest4		0.23
MutPred		0.39		Loss of ubiquitination at K113 (P = 0.0224)
MVP		0.16
MPC		0.23
ClinPred		0.014	T
GERP RS		-3.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2
Varity_R		0.10
gMVP		0.22
Mutation Taster		=95/5	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

hg19: chr3-47030644;