93801-9

LOINC 2.82

Chromosome 1 polysomy [Presence] in Tissue by FISH

Chr 1 polysomy Tiss Ql FISH

Definition

  • This test determines if chromosome 1 polysomy is present in tissue (tumor) specimens. Chromosome 1 polysomy is defined as 3 or more signals for 1q and/or 19p in >30% of tumor cells with concurrent 1p/19q deletion.[PMID: 19808867] Chromosome 1 polysomy is a prognostic indicator of poorer outcome for oligodendroglioma patients.

Component

  • Chromosome 1 polysomy

Specimen / system

  • Tiss

Class

  • MOLPATH

Property

  • PrThr

Scale

  • Ord

Method

  • FISH

Related names

  • Chr 1 polysomy; Chromosom; Chromosomes; Fluorescent in situ hybridization; i; Molecular pathology; MOLPATH; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Tissue; Tissue, unspecified

Index terms

  • Chr 1 polysomy
  • Chromosom
  • Chromosomes
  • Fluorescent in situ hybridization
  • i
  • Molecular pathology
  • MOLPATH
  • Ordinal
  • Point in time
  • PR
  • QL
  • Qual
  • Qualitative
  • Random
  • Screen
  • Tissue
  • Tissue, unspecified