11-1757341-GAA-TAT

Variant names:

• chr11-1757341-GAA-TAT
• NM_001909.5:c.685_687delTTCinsATA
• CTSD p.Phe229Ile

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PS1 PP3

The NM_001909.5(CTSD):​c.685_687delTTCinsATA​(p.Phe229Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Pathogenic in ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: CTSD NM_001909.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 8.38
• Publications: 0 publications found

Genes affected

CTSD (HGNC:2529): (cathepsin D) This gene encodes a member of the A1 family of peptidases. The encoded preproprotein is proteolytically processed to generate multiple protein products. These products include the cathepsin D light and heavy chains, which heterodimerize to form the mature enzyme. This enzyme exhibits pepsin-like activity and plays a role in protein turnover and in the proteolytic activation of hormones and growth factors. Mutations in this gene play a causal role in neuronal ceroid lipofuscinosis-10 and may be involved in the pathogenesis of several other diseases, including breast cancer and possibly Alzheimer's disease. [provided by RefSeq, Nov 2015]

CTSD Gene-Disease associations (from GenCC):

• neuronal ceroid lipofuscinosis

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• neuronal ceroid lipofuscinosis 10

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp, G2P

ENSG00000250644 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PS1: Transcript NM_001909.5 (CTSD) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in ClinVar.
• PP3: No computational evidence supports a deleterious effect, but strongly conserved according to phyloP

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001909.5. 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
	CTSD	NM_001909.5	MANE Select	c.685_687delTTCinsATA	p.Phe229Ile	missense	N/A	NP_001900.1	P07339

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CTSD	ENST00000236671.7	TSL:1 MANE Select	c.685_687delTTCinsATA	p.Phe229Ile	missense	N/A	ENSP00000236671.2	P07339
	ENSG00000250644	ENST00000636615.1	TSL:5	c.685_687delTTCinsATA	p.Phe229Ile	missense	N/A	ENSP00000490014.1	A0A1B0GU92
	ENSG00000250644	ENST00000636397.1	TSL:5	c.685_687delTTCinsATA	p.Phe229Ile	missense	N/A	ENSP00000489910.1	A0A1B0GU03

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		8.4

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr11-1778571;