Genetic Variant TULP1:p.Arg419Gln (chr6-35503626-C-T) – ACMG Classification: Pathogenic (10 pts)

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM1PM5PP2PP3_StrongPP5

The NM_003322.6(TULP1):c.1256G>A(p.Arg419Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000938 in 1,599,184 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R419W) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000083 ( 0 hom. )

Consequence

TULP1
NM_003322.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:6U:2

Conservation

PhyloP100: 7.52

Publications

3 publications found

Variant links:

Genes affected

TULP1 (HGNC:12423): (TUB like protein 1) This gene encodes a member of the tubby-like gene family (TULPs). Members of this family have been identified in plants, vertebrates, and invertebrates. TULP proteins share a conserved C-terminal region of approximately 200 amino acid residues. The protein encoded by this gene is thought to play a role in the physiology of photoreceptors. Mutations in this gene are associated with recessive juvenile retinitis pigmentosa and Leber congenital amaurosis-15. [provided by RefSeq, Nov 2016]

TULP1 Gene-Disease associations (from GenCC):

retinitis pigmentosa 14
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
Leber congenital amaurosis 15
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
Leber congenital amaurosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
retinitis pigmentosa
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

TULP1 links:

LINC03135 (HGNC:58100):

LINC03135 links:

LOC124901309 (HGNC:):

LOC124901309 links:

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ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 10 ACMG points.

PM1

In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 12 uncertain in NM_003322.6

PM5

Other missense variant is known to change same aminoacid residue: Variant chr6-35503627-G-A is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 1069193.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 30 curated pathogenic missense variants (we use a threshold of 10). The gene has 7 curated benign missense variants. Gene score misZ: 0.64726 (below the threshold of 3.09). Trascript score misZ: -0.4024 (below the threshold of 3.09). GenCC associations: The gene is linked to retinitis pigmentosa, retinitis pigmentosa 14, Leber congenital amaurosis 15, Leber congenital amaurosis.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.956

PP5

Variant 6-35503626-C-T is Pathogenic according to our data. Variant chr6-35503626-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 191207.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003322.6. 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
	TULP1	NM_003322.6	MANE Select	c.1256G>A	p.Arg419Gln	missense	Exon 13 of 15	NP_003313.3
	TULP1	NM_001289395.2		c.1097G>A	p.Arg366Gln	missense	Exon 12 of 14	NP_001276324.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TULP1	ENST00000229771.11	TSL:1 MANE Select	c.1256G>A	p.Arg419Gln	missense	Exon 13 of 15	ENSP00000229771.6
TULP1	ENST00000322263.8	TSL:1	c.1097G>A	p.Arg366Gln	missense	Exon 12 of 14	ENSP00000319414.4
TULP1	ENST00000614066.4	TSL:5	c.1250G>A	p.Arg417Gln	missense	Exon 12 of 14	ENSP00000477534.1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00

AC:

AN:

221606

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000829

AC:

AN:

1446982

Hom.:

Cov.:

AF XY:

0.0000111

AC XY:

AN XY:

718228

show subpopulations

African (AFR)

AF:

0.0000905

AC:

AN:

33140

American (AMR)

AF:

0.00

AC:

AN:

42818

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25742

East Asian (EAS)

AF:

0.00

AC:

AN:

38920

South Asian (SAS)

AF:

0.0000120

AC:

AN:

83484

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52180

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5754

European-Non Finnish (NFE)

AF:

0.00000633

AC:

AN:

1105142

Other (OTH)

AF:

0.00

AC:

AN:

59802

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.0000197

AC:

AN:

152202

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74366

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41452

American (AMR)

AF:

0.00

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68036

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.0000138

Hom.:

Bravo

AF:

0.0000264

ExAC

AF:

0.00000825

AC:

ClinVar

ClinVar submissions as Germline

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (3)

Retinal dystrophy (2)

Autosomal recessive retinitis pigmentosa (1)

Leber congenital amaurosis (1)

Retinitis pigmentosa 14;C3151206:Leber congenital amaurosis 15 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.98

BayesDel_addAF

Pathogenic

0.51

BayesDel_noAF

Pathogenic

0.49

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.95

Eigen

Pathogenic

0.91

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.96

M_CAP

Pathogenic

0.69

MetaRNN

Pathogenic

0.96

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

4.0

PhyloP100

7.5

PrimateAI

Uncertain

0.64

PROVEAN

Uncertain

-4.0

REVEL

Pathogenic

0.96

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.96

MVP

0.97

MPC

0.98

ClinPred

1.0

GERP RS

4.3

Varity_R

0.87

gMVP

0.82

Mutation Taster

=5/95

disease causing (ClinVar)

(source)

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

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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

Computational scores

Splicing

Publications

Other links and lift over