Table 1.

Prevalence of 9p and 17p LOH in 60 patients with a maximum diagnosis of high-grade dysplasia^*

	No. with LOH/No. studied (% [95% CI])
60 total patients, any LOH on 9p or 17p	44/60 (73 [60% — 84%])
Patients informative for at least one locus
Prevalence of 9p LOH	35/59 (59 [46%—72%])
Prevalence of 17p LOH	34/57 (60 [46%—72%])
56 patients in whom both 9p and 17p loci could be evaluated
Patients with neither	13/56 (23 [13%—36%])
Patients with 9p LOH only	9/56 (16 [8%—28%])
Patients with 17p LOH only	9/56 (16 [8%—28%])
Patients with both 17p LOH and 9p LOH	25/56 (45 [31%—59%])

^*LOH = loss of heterozygosity; CI = confidence interval.