19-2102199-T-A

Variant names:

• chr19-2102199-T-A
• rs199675498
• NM_001261826.3:c.3622A>T

Variant summary

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

The NM_001261826.3(AP3D1):​c.3622A>T​(p.Met1208Leu) 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 1,613,960 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 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. M1208V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: AP3D1 NM_001261826.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.808
• Publications: 1 publications found

Genes affected

AP3D1 (HGNC:568): (adaptor related protein complex 3 subunit delta 1) The protein encoded by this gene is a subunit of the AP3 adaptor-like complex, which is not clathrin-associated, but is associated with the golgi region, as well as more peripheral structures. The AP-3 complex facilitates the budding of vesicles from the golgi membrane, and may be directly involved in trafficking to lysosomes. This subunit is implicated in intracellular biogenesis and trafficking of pigment granules, and possibly platelet dense granules and neurotransmitter vesicles. Defects in this gene are a cause of a new type of Hermansky-Pudlak syndrome. [provided by RefSeq, Feb 2017]

AP3D1 Gene-Disease associations (from GenCC):

• Hermansky-Pudlak syndrome 10

  Inheritance: Unknown, AR Classification: MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen

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=0.10336444).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001261826.3. 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
	AP3D1	NM_001261826.3	MANE Select	c.3622A>T	p.Met1208Leu	missense	Exon 32 of 32	NP_001248755.1	O14617-5
	AP3D1	NM_001374799.1		c.3586A>T	p.Met1196Leu	missense	Exon 32 of 32	NP_001361728.1	A0A8V8TQW4
	AP3D1	NM_003938.8		c.3436A>T	p.Met1146Leu	missense	Exon 30 of 30	NP_003929.4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AP3D1	ENST00000643116.3	MANE Select	c.3622A>T	p.Met1208Leu	missense	Exon 32 of 32	ENSP00000495274.2	O14617-5
	AP3D1	ENST00000345016.9	TSL:1	c.3436A>T	p.Met1146Leu	missense	Exon 30 of 30	ENSP00000344055.4	O14617-1
	AP3D1	ENST00000591650.1	TSL:1	n.859A>T		non_coding_transcript_exon	Exon 7 of 7

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152218 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

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: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461742 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 727184

African (AFR) AF: 0.00 AC: 0 AN: 33474

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

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

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: 53358

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111942

Other (OTH) AF: 0.00 AC: 0 AN: 60390

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152218 Hom.: 0 Cov.: 33 AF XY: 0.0000134 AC XY: 1 AN XY: 74370

African (AFR) AF: 0.0000241 AC: 1 AN: 41448

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5204

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10628

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68040

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

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	0.12
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.53
CADD	Benign	11
DANN	Benign	0.83
DEOGEN2	Benign	0.075	T
Eigen	Benign	-0.60
Eigen_PC	Benign	-0.50
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Benign	0.73	T
M_CAP	Benign	0.0048	T
MetaRNN	Benign	0.10	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.5	L
PhyloP100		0.81
PrimateAI	Uncertain	0.52	T
PROVEAN	Benign	-0.15	N
REVEL	Benign	0.086
Sift	Benign	0.59	T
Sift4G	Benign	0.41	T
Polyphen		0.0020	B
Vest4		0.32
MutPred		0.40		Loss of ubiquitination at K1147 (P = 0.1704)
MVP		0.23
MPC		0.082
ClinPred		0.071	T
GERP RS		2.3
Varity_R		0.20
gMVP		0.092
Mutation Taster		=94/6	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

dbSNP: rs199675498; hg19: chr19-2102198;