2-15945928-C-A

Position:

• chr2-15945928-C-A

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1 PM2 PP3_Strong

The NM_005378.6(MYCN):​c.1226C>A​(p.Pro409Gln) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic 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. P409L) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: MYCN NM_005378.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.13

Genes affected

MYCN (HGNC:7559): (MYCN proto-oncogene, bHLH transcription factor) This gene is a member of the MYC family and encodes a protein with a basic helix-loop-helix (bHLH) domain. This protein is located in the nucleus and must dimerize with another bHLH protein in order to bind DNA. Amplification of this gene is associated with a variety of tumors, most notably neuroblastomas. Multiple alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2014]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM1: In a domain bHLH (size 52) in uniprot entity MYCN_HUMAN there are 16 pathogenic changes around while only 2 benign (89%) in NM_005378.6
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.989

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MYCN	NM_005378.6	c.1226C>A	p.Pro409Gln	missense_variant	3/3	ENST00000281043.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MYCN	ENST00000281043.4	c.1226C>A	p.Pro409Gln	missense_variant	3/3	5	NM_005378.6	P1
MYCN	ENST00000638417.1	c.593C>A	p.Pro198Gln	missense_variant	2/2	2
MYCN	ENST00000703162.1	n.575C>A		non_coding_transcript_exon_variant	2/2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.46	D
BayesDel_noAF	Pathogenic	0.43
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.99	D;.
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.93
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.79	T;T
M_CAP	Pathogenic	0.58	D
MetaRNN	Pathogenic	0.99	D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	3.9	H;.
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.77	T
PROVEAN	Pathogenic	-7.3	D;.
REVEL	Pathogenic	0.95
Sift	Pathogenic	0.0	D;.
Sift4G	Pathogenic	0.0010	D;.
Polyphen		1.0	D;.
Vest4		0.78
MutPred		0.88		Gain of MoRF binding (P = 0.0331);.;
MVP		0.93
MPC		1.8
ClinPred		1.0	D
GERP RS		5.1
Varity_R		0.92
gMVP		0.95

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: chr2-16086050;