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Epm1 details#227

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hdashnow merged 12 commits intomainfrom
EPM1-Details
Jul 10, 2025
Merged

Epm1 details#227
hdashnow merged 12 commits intomainfrom
EPM1-Details

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@Macayla-weiner
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@Macayla-weiner Macayla-weiner commented Jul 9, 2025

Added EPM1 details field, updating Huntington's so motif ranges match, added new GnomAD links (#222).

Description

Summarize the changes

Fixes: #222

Minor Changes

  • Added a details field for EPM1
  • Made HTT motif ranges match (using most recent study, pmid:39572770)
  • Added missing/new GnomAd links

Checklist

  • All changes are well summarized
  • Check all tests pass
  • Check that the website preview looks good
  • Update the STRchive version in CITATION.cff, format X.Y.Z. If any major changes, increment Y. If only minor changes, increment Z. If the breaking change (rare), increment X.
  • Ask someone to review this PR

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"mechanism_detail": "LoF [@pmid:38467784].",
"source": [],
"details": null,
"details": "2-3 motifs are benign, 12-17 have not undergone clinical evaluation and are therefore designated as intermediate, and 30-125 repeats are pathogenic. 4-11 and 18-29 repeats have not been studied or reported. The length of the pathogenic allele affects age of onset and severity, but severity also varies between families [@pmid:18325013; @genereviews:NBK1142].",
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On web preview the citations are "3,2", should I flip the order or does it not matter

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The citation number is based on the overall order across all the fields. In this case, NBK1142 was cited earlier up in the age_onset field, so that's why it is number 2. You are welcome to flip them for neatness, but it's totally optional.

@Macayla-weiner Macayla-weiner requested a review from hdashnow July 9, 2025 17:37
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Awesome! A few suggestions in comments.

"mechanism_detail": "LoF [@pmid:38467784].",
"source": [],
"details": null,
"details": "2-3 motifs are benign, 12-17 have not undergone clinical evaluation and are therefore designated as intermediate, and 30-125 repeats are pathogenic. 4-11 and 18-29 repeats have not been studied or reported. The length of the pathogenic allele affects age of onset and severity, but severity also varies between families [@pmid:18325013; @genereviews:NBK1142].",
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The citation number is based on the overall order across all the fields. In this case, NBK1142 was cited earlier up in the age_onset field, so that's why it is number 2. You are welcome to flip them for neatness, but it's totally optional.

"mechanism_detail": "LoF [@pmid:38467784].",
"source": [],
"details": null,
"details": "2-3 motifs are benign, 12-17 have not undergone clinical evaluation and are therefore designated as intermediate, and 30-125 repeats are pathogenic. 4-11 and 18-29 repeats have not been studied or reported. The length of the pathogenic allele affects age of onset and severity, but severity also varies between families [@pmid:18325013; @genereviews:NBK1142].",
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Looking at PMID: 18325013, I'm finding the way they describe the different middle ranges a bit confusing.
For this bit "Alleles of 12-17 dodecamer repeats have been observed, but individuals with alleles in this range have not undergone thorough clinical evaluation for signs and symptoms of EPM1"

I think we'd just not count them in any of the ranges because we don't know what they mean. So probably intermediate range should be null/null.

Then in the description here I would rephrase a little to put the key info up front next to the citation and group the unknown ranges. Maybe something like this?
"alleles containing 2-3 motifs are considered benign, while alleles with 30-125 repeats are fully penetrant [@pmid:18325013]. Alleles in the range 12-17 have been observed, however the individuals carrying them have not undergone clinical evaluation. Alleles in the range 4-11 and 18-29 repeats have not been reported to date."

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It would also be nice to start the details section with something like this phrase from the paper so they know what dodecamer means:
Affected individuals "have an unstable expansion of a 12-nucleotide (dodecamer) repeat"

CITATION.cff Outdated
title: STRchive
version: 2.5.1
date-released: "2025-07-08"
version: 2.5.2
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Since there's a change to the HTT min pathogenic range, I think this should be a major version change. So 2.6.0.

@Macayla-weiner Macayla-weiner requested a review from hdashnow July 10, 2025 17:59
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A few more minor edits. I'll try to figure out why it's failing. Odds are it's something I did.

"novel": null,
"mechanism": "LoF",
"mechanism_detail": "LoF [@pmid:38467784].",
"mechanism_detail": "The repeat expanison causes significantly reduced esxpression of cystatin-B protein [@genereviews:NBK1142].",
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typo:
esxpression -> expression

"mechanism_detail": "The repeat expanison causes significantly reduced esxpression of cystatin-B protein [@genereviews:NBK1142].",
"source": [],
"details": null,
"details": "Affected individuals have an unstable 12-nucleotide (dodecomer) repeat expansion. Alleles containing 2-3 motifs are considered benign, while alleles with 30-125 repeats are fully penetrant [@pmid:18325013]. Alleles in the range 12-17 repeats have been observed, however the individuals carrying them have not undergone clinical evaluation. Alleles in the range 4-11 and 18-29 repeats have not been reported to date.",
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Perfect!

"mechanism_detail": "While the primary pathogenic mechanism is gain of function of the protein product, pathogenesis is complex and multifactorial [@pmid:27940602].",
"source": [],
"details": "27-35 motifs are unstable/premutations, while 36-39 motifs are associated with reduced penetrance and mild phenotypes [@pmid:39572770]. >60 motifs associated with onset age <20 years [@genereviews:NBK1305]. Only CAG expansions are considered pathogenic, but interruptions impact pathogenicity (e.g. CAA) [@pmid:35245110]. Only fathers with premutations are considered at risk of transmitting pathogenic alleles [@pmid:19507258]. CAG repeats in the non-HD range (>= 21 repeats) may modulate psychiatric disease risk in an age-dependent manner [@pmid:39572770]",
"details": "27-35 motifs are unstable/premutations, while 36-39 motifs are associated with reduced penetrance and mild phenotypes [@pmid:39572770], and alleles over 40 repeats are typically full penetrant [@genereviews:NBK1305]. >60 motifs associated with onset age <20 years [@genereviews:NBK1305]. Only CAG expansions are considered pathogenic, but interruptions impact pathogenicity (e.g. CAA) [@pmid:35245110]. Only fathers with premutations are considered at risk of transmitting pathogenic alleles [@pmid:19507258]. CAG repeats in the non-HD range (>= 21 repeats) may modulate psychiatric disease risk in an age-dependent manner [@pmid:39572770]",
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full penetrant -> fully penetrant

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geez I can't type today!

Macayla-weiner and others added 7 commits July 10, 2025 16:31
@hdashnow hdashnow merged commit 779bf2b into main Jul 10, 2025
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@hdashnow hdashnow deleted the EPM1-Details branch July 10, 2025 23:05
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Update gnomAD links

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