Genetic Variant RTTN:c.4303-38_4303-11delTTTTTTTTTTTTTTTTTTTTTTTTTTTT (chr18-70086694-TAAAAAAAAAAAAAAAAAAAAAAAAAAAA-T) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_173630.4(RTTN):c.4303-38_4303-11delTTTTTTTTTTTTTTTTTTTTTTTTTTTT variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00016 in 487,784 control chromosomes in the GnomAD database, including 3 homozygotes. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000059 ( 1 hom., cov: 0)

Exomes 𝑓: 0.00018 ( 2 hom. )

Consequence

RTTN
NM_173630.4 intron

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.23

Variant links:

Genes affected

RTTN (HGNC:18654): (rotatin) This gene encodes a large protein whose specific function is unknown. Absence of the orthologous protein in mouse results in embryonic lethality with deficient axial rotation, abnormal differentiation of the neural tube, and randomized looping of the heart tube during development. In human, mutations in this gene are associated with polymicrogyria with seizures. In human fibroblasts this protein localizes at the ciliary basal bodies. Given the intracellular localization of this protein and the phenotypic effects of mutations, this gene is suspected of playing a role in the maintenance of normal ciliary structure which in turn effects the developmental process of left-right organ specification, axial rotation, and perhaps notochord development. [provided by RefSeq, Jan 2013]

RTTN links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RTTN	NM_173630.4 link	c.4303-38_4303-11delTTTTTTTTTTTTTTTTTTTTTTTTTTTT		intron_variant	Intron 31 of 48	ENST00000640769.2	NP_775901.3	Q86VV8-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RTTN	ENST00000640769.2 link	c.4303-38_4303-11delTTTTTTTTTTTTTTTTTTTTTTTTTTTT		intron_variant	Intron 31 of 48	2	NM_173630.4	ENSP00000491507.1		Q86VV8-1

Frequencies

GnomAD3 genomes

AF:

0.0000587

AC:

AN:

68178

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000136

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000183

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:

0.00120

GnomAD4 exome

AF:

0.000176

AC:

AN:

419606

Hom.:

AF XY:

0.000159

AC XY:

AN XY:

226198

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000282

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000377

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000337

Gnomad4 NFE exome

AF:

0.000239

Gnomad4 OTH exome

AF:

0.000148

GnomAD4 genome

AF:

0.0000587

AC:

AN:

68178

Hom.:

Cov.:

AF XY:

0.000132

AC XY:

AN XY:

30196

show subpopulations

Gnomad4 AFR

AF:

0.000136

Gnomad4 AMR

AF:

0.000183

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00120

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

18-70086694-TAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-TAAA

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

LitVar

Other links and lift over