Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_004722.4(AP4M1):c.228C>T(p.Pro76Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00705 in 1,614,124 control chromosomes in the GnomAD database, including 71 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0063 ( 6 hom., cov: 31)

Exomes 𝑓: 0.0071 ( 65 hom. )

Consequence

AP4M1
NM_004722.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: -2.15

Publications

6 publications found

Variant links:

Genes affected

AP4M1 (HGNC:574): (adaptor related protein complex 4 subunit mu 1) This gene encodes a subunit of the heterotetrameric AP-4 complex. The encoded protein belongs to the adaptor complexes medium subunits family. This AP-4 complex is involved in the recognition and sorting of cargo proteins with tyrosine-based motifs from the trans-golgi network to the endosomal-lysosomal system. [provided by RefSeq, Jul 2008]

AP4M1 Gene-Disease associations (from GenCC):

AP-4 deficiency syndrome
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
hereditary spastic paraplegia 50
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
AP4-related intellectual disability and spastic paraplegia
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

AP4M1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.54).

BP6

Variant 7-100102755-C-T is Benign according to our data. Variant chr7-100102755-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 210209.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-2.15 with no splicing effect.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00628 (956/152284) while in subpopulation NFE AF = 0.00863 (587/68016). AF 95% confidence interval is 0.00805. There are 6 homozygotes in GnomAd4. There are 471 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 6 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004722.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
AP4M1	NM_004722.4	MANE Select	c.228C>T	p.Pro76Pro	synonymous	Exon 3 of 15	NP_004713.2
AP4M1	NM_001363671.2		c.249C>T	p.Pro83Pro	synonymous	Exon 3 of 15	NP_001350600.1
AP4M1	NM_001438824.1		c.249C>T	p.Pro83Pro	synonymous	Exon 4 of 16	NP_001425753.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
AP4M1	ENST00000359593.9	TSL:1 MANE Select	c.228C>T	p.Pro76Pro	synonymous	Exon 3 of 15	ENSP00000352603.4
AP4M1	ENST00000421755.5	TSL:1	c.228C>T	p.Pro76Pro	synonymous	Exon 3 of 16	ENSP00000412185.1
AP4M1	ENST00000429084.5	TSL:5	c.249C>T	p.Pro83Pro	synonymous	Exon 3 of 15	ENSP00000403663.1

Frequencies

GnomAD3 genomes

AF:

0.00628

AC:

956

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00125

Gnomad AMI

AF:

0.00110

Gnomad AMR

AF:

0.00275

Gnomad ASJ

AF:

0.0291

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00145

Gnomad FIN

AF:

0.0142

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.00863

Gnomad OTH

AF:

0.00574

GnomAD2 exomes

AF:

0.00729

AC:

1832

AN:

251464

AF XY:

0.00723

show subpopulations

Gnomad AFR exome

AF:

0.00148

Gnomad AMR exome

AF:

0.00185

Gnomad ASJ exome

AF:

0.0265

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0152

Gnomad NFE exome

AF:

0.00926

Gnomad OTH exome

AF:

0.00831

GnomAD4 exome

AF:

0.00714

AC:

10431

AN:

1461840

Hom.:

Cov.:

AF XY:

0.00712

AC XY:

5175

AN XY:

727230

show subpopulations

African (AFR)

AF:

0.00108

AC:

AN:

33480

American (AMR)

AF:

0.00197

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.0262

AC:

686

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00146

AC:

126

AN:

86258

European-Finnish (FIN)

AF:

0.0160

AC:

856

AN:

53412

Middle Eastern (MID)

AF:

0.0127

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00732

AC:

8137

AN:

1111970

Other (OTH)

AF:

0.00710

AC:

429

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.474

Heterozygous variant carriers

623

1246

1868

2491

3114

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

274

548

822

1096

1370

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00628

AC:

956

AN:

152284

Hom.:

Cov.:

AF XY:

0.00633

AC XY:

471

AN XY:

74452

show subpopulations

African (AFR)

AF:

0.00125

AC:

AN:

41562

American (AMR)

AF:

0.00275

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.0291

AC:

101

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00145

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.0142

AC:

151

AN:

10610

Middle Eastern (MID)

AF:

0.0102

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00863

AC:

587

AN:

68016

Other (OTH)

AF:

0.00568

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

103

155

206

258

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00872

Hom.:

Bravo

AF:

0.00531

Asia WGS

AF:

0.00173

AC:

AN:

3478

EpiCase

AF:

0.00840

EpiControl

AF:

0.00895

ClinVar

ClinVar submissions as Germline

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Hereditary spastic paraplegia 50 (2)

not provided (2)

not specified (2)

Hereditary spastic paraplegia (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.54

CADD

Benign

8.1

(source)

DANN

Benign

0.76

PhyloP100

-2.2

Mutation Taster

=293/7

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.13

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

rs41280965

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over