10-74138229-T-G

Variant names:

• chr10-74138229-T-G
• rs775092470
• NM_012095.6:c.151A>C

Variant summary

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

The NM_012095.6(AP3M1):​c.151A>C​(p.Thr51Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,856 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. T51A) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: AP3M1 NM_012095.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.67
• Publications: 0 publications found

Genes affected

AP3M1 (HGNC:569): (adaptor related protein complex 3 subunit mu 1) The protein encoded by this gene is the medium subunit of AP-3, which is an adaptor-related protein complex associated with the Golgi region as well as more peripheral intracellular structures. AP-3 facilitates the budding of vesicles from the Golgi membrane, and it may directly function in protein sorting to the endosomal/lysosomal system. AP-3 is a heterotetrameric protein complex composed of two large subunits (delta and beta3), a medium subunit (mu3), and a small subunit (sigma 3). Mutations in one of the large subunits of AP-3 have been associated with the Hermansky-Pudlak syndrome, a genetic disorder characterized by defective lysosome-related organelles. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Feb 2016]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_012095.6. 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
	AP3M1	NM_012095.6	MANE Select	c.151A>C	p.Thr51Pro	missense	Exon 2 of 9	NP_036227.1	Q9Y2T2
	AP3M1	NM_001320263.2		c.151A>C	p.Thr51Pro	missense	Exon 4 of 11	NP_001307192.1	Q9Y2T2
	AP3M1	NM_001320264.2		c.151A>C	p.Thr51Pro	missense	Exon 2 of 9	NP_001307193.1	Q9Y2T2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AP3M1	ENST00000355264.9	TSL:1 MANE Select	c.151A>C	p.Thr51Pro	missense	Exon 2 of 9	ENSP00000347408.4	Q9Y2T2
	AP3M1	ENST00000372745.1	TSL:1	c.151A>C	p.Thr51Pro	missense	Exon 3 of 10	ENSP00000361831.1	Q9Y2T2
	AP3M1	ENST00000867215.1		c.151A>C	p.Thr51Pro	missense	Exon 3 of 10	ENSP00000537274.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461856 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727226

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: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39684

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

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

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

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111996

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.67
BayesDel_addAF	Pathogenic	0.41	D
BayesDel_noAF	Pathogenic	0.35
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Benign	0.25	T
Eigen	Pathogenic	0.78
Eigen_PC	Pathogenic	0.75
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Uncertain	0.26	D
MetaRNN	Uncertain	0.61	D
MetaSVM	Uncertain	0.39	D
MutationAssessor	Pathogenic	3.3	M
PhyloP100		7.7
PrimateAI	Uncertain	0.63	T
PROVEAN	Uncertain	-4.0	D
REVEL	Pathogenic	0.79
Sift	Uncertain	0.010	D
Sift4G	Benign	0.11	T
Polyphen		0.99	D
Vest4		0.53
MutPred		0.56		Gain of glycosylation at P52 (P = 0.0603)
MVP		0.82
MPC		1.2
ClinPred		0.99	D
GERP RS		5.6
Varity_R		0.76
gMVP		0.83
Mutation Taster		=30/70	disease causing

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: rs775092470; hg19: chr10-75897987;