17-50517423-A-G

Variant names:

• chr17-50517423-A-G
• rs149804358
• NM_032133.6:c.335A>G

Variant summary

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

The NM_032133.6(MYCBPAP):​c.335A>G​(p.Asp112Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000124 in 1,614,064 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/19 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. D112V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: MYCBPAP NM_032133.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.19
• Publications: 0 publications found

Genes affected

MYCBPAP (HGNC:19677): (MYCBP associated protein) Involved in spermatogenesis. Located in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

MYCBPAP Gene-Disease associations (from GenCC):

• spermatogenic failure

  Inheritance: AR Classification: MODERATE Submitted by: Ambry Genetics

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=0.16801244).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032133.6. 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
	MYCBPAP	NM_032133.6	MANE Select	c.335A>G	p.Asp112Gly	missense	Exon 3 of 19	NP_115509.5
	MYCBPAP	NM_001366294.2		c.335A>G	p.Asp112Gly	missense	Exon 3 of 19	NP_001353223.1	C9JXR6
	MYCBPAP	NR_158785.2		n.571A>G		non_coding_transcript_exon	Exon 3 of 18

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYCBPAP	ENST00000323776.11	TSL:1 MANE Select	c.335A>G	p.Asp112Gly	missense	Exon 3 of 19	ENSP00000323184.6	Q8TBZ2-2
	MYCBPAP	ENST00000452039.7	TSL:5	c.335A>G	p.Asp112Gly	missense	Exon 3 of 19	ENSP00000407145.3	C9JXR6
	MYCBPAP	ENST00000879749.1		c.335A>G	p.Asp112Gly	missense	Exon 3 of 19	ENSP00000549808.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152174 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461890 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727248

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

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

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1112012

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152174 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74336

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 41430

American (AMR) AF: 0.00 AC: 0 AN: 15272

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5200

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 314

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68032

Other (OTH) AF: 0.00 AC: 0 AN: 2090

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.090
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
CADD	Benign	18
DANN	Uncertain	0.98
DEOGEN2	Benign	0.10	T
Eigen	Benign	-0.025
Eigen_PC	Benign	-0.035
FATHMM_MKL	Benign	0.55	D
LIST_S2	Benign	0.82	T
M_CAP	Benign	0.017	T
MetaRNN	Benign	0.17	T
MetaSVM	Benign	-0.94	T
PhyloP100		2.2
PrimateAI	Benign	0.35	T
PROVEAN	Uncertain	-3.5	D
REVEL	Benign	0.17
Sift	Uncertain	0.019	D
Sift4G	Benign	0.12	T
Vest4		0.30
MutPred		0.24		Loss of helix (P = 0.0558)
MVP		0.37
MPC		0.56
ClinPred		0.93	D
GERP RS		5.4
Mutation Taster		=91/9	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.11		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: rs149804358; hg19: chr17-48594784;