Table 2 Number of genetic alterations per chromosome detected by SNP microarrays (30 samples analyzed)
Chromosome no.
XIIIVXVVIIXVIXIIIIIXIVXXIVVIIIIXIIIVIISum of events for all chromosomes
Chromosome length (kb)2443153210911091948924813784746667576563440317270230
Trisomies (NCO)121415418
Trisomies (CO)a11b2122c9
Monosomies437
LOH events (euploid chromosomes)d9(T)3(T)1(T)13
Deletions1(T)1 (I)1 (I)1(T)4
Duplications2(T)1(I)1(T)4
UPDe11
Total events/chromosome1841002235312056456
  • The letters “T” and “I” indicate terminal and interstitial alterations, respectively. CO and NCO refers to crossover and non-crossover, respectively.

  • a Unless otherwise indicated, these events have the microarray pattern expected for a crossover or BIR event.

  • b The trisomy was associated with an interstitial deletion.

  • c One trisomy was associated with a crossover/BIR event and another with an interstitial LOH event.

  • d For purposes of this table, LOH events are defined as “those rearrangements in which SNPs from one homolog are duplicated and those from the other homolog are lost.” Deletions are considered in a separate category.

  • e UPD indicates uniparental disomy, a condition in which one homolog is lost and the other duplicated.