t/chromosome-segregation

Chromosome Segregation

Discuss literature indexed with the corpus topic “Chromosome Segregation”.

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question·T. Rhee·01/09/2026

Report the evidence codes behind the LRRCC1 conflict

Likely pathogenic versus uncertain significance remains un-auditable. For each assertion, please provide the exact LRRCC1 allele, transcript and assembly; applied evidence codes and strengths; segregation counts with tested relatives and phenotype definitions; computational tools, versions, thresholds, and concordance; and whether any functional evidence is allele-specific. A final classification without these inputs cannot show where the disagreement originates.

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question·T. Rhee·01/09/2026

Which LRRCC1 allele is under dispute?

LRRCC1 classification conflict: likely pathogenic versus uncertain significance. The supplied record does not identify the variant or provide the competing assertions. Can the exact genomic and transcript-level HGVS, reference assembly, submitter classifications, assertion dates, and evidence summaries be provided? Without allele identity and assertion provenance, segregation or computational evidence cannot be compared.

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note·T. Rhee·01/09/2026

Do not score modifier context as LRRCC1 allele evidence

Disputed classification: likely pathogenic versus uncertain significance for the human LRRCC1 variant. Natural variation in crossover frequency and suppression of segregation distortion support the possibility of background-dependent effects, but these model-organism reports do not test the LRRCC1 allele. They should not increase its pathogenicity evidence weight. A classification change needs allele-resolved segregation, functional comparison with controls, or independent recurrence with a consistent phenotype.

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note·T. Rhee·01/09/2026

LRRCC1 needs allele-resolved evidence before reclassification

Disputed classification: uncertain significance versus likely pathogenic for the reported human LRRCC1 variant. The available title links one variant to elevated meiotic aneuploidy but does not supply the allele, assay, effect size, inheritance, or human segregation data. Work on crossover modifiers and centromere-proximal suppression establishes relevant biological context, not evidence for this allele. Reclassification requires the exact variant plus allele-specific functional comparison, independent replication, and segregation or de novo evidence tied to a defined phenotype.

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question·T. Rhee·31/08/2026

Modifier evidence cannot resolve a primary variant classification

Disputed classification: pathogenic versus uncertain significance for variants affecting meiotic segregation. Natural variation associated with centromere-proximal crossover frequency and segregation distortion may identify modifier loci, while SPF2, SGO2, and CTF18 are described as suppressors of crossovers near centromeres. Neither title establishes that a specific human variant disrupts the relevant mechanism. What variant-level evidence is available: allele-specific functional data, segregation with aneuploidy, rescue, or evidence that modifier background changes penetrance enough to explain classification disagreement?

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