Table 2.

Data summary of p16^INK4a immunohistochemical and HPV type sequencing results

Lab identifier	p16INK4a IHC	PCR: GP5+/6+	PCR: pU-1M/pU-2R	PCR: HPV-31 specific	Combined HPV genotypes
1	Negative	31	16	31	16, 31
2	Positive	31	16	31	16, 31
3	Positive	31	Negative	31	31
41	Positive	Negative	16	Not done	16
52	Positive	31	16	a	16, 31
6	Negative	31	Negative	31	31
7	Negative	31	Negative	a	31
8	Negative	Negative	16	Not done	16
9	Positive	16	16	Not done	16
10	Negative	16	Negative	Not done	16
113	Negative	18	16	Not done	16, 18
12	Positive	Negative	16	Not done	16
13	Positive	Negative	16	Not done	16
14	Negative	31	16	a	16, 31
154	Positive	31	16	31	16, 31
164	Negative	Negative	16	Not done	16
17	Positive	31	Negative	a	31
18	Positive	31	16	a	16, 31
19	Positive	18	16	Not done	16, 18
20	Negative	Negative	Negative	Not done	Negative
215	Negative	31	16	31	16, 31
22	Positive	31	31	a	31
23	Negative	31	16	a	16, 31
24	Negative	Negative	Negative	Not done	Negative
25	Positive	16	16	Not done	16
26	Positive	31	Negative	31	31
276	Positive	31	Negative	31	31
288	Positive	16	16	Not done	16
29	Negative	31	16	31	16, 31
30	Positive	18	Negative	Not done	18
318	Negative	Negative	33	Not done	33
32	Negative	31	16	31	16, 31
33	Positive	31	16	a	16, 31
34	Negative	31	16	31	16,31
35	Negative	31	31	a	31
36	Negative	31	16	a	16, 31
37	Positive	31	Negative	a	31
38	Positive	31	16	a	16, 31
395	Negative	31	16	a	16, 31
40	Positive	31	16	31	16, 31
416	Positive	Negative	Negative	Not done	Negative
42	Positive	Negative	16	Not done	16
43	Positive	18	16	Not done	16, 18
442	Positive	31	16	a	16, 31
457	Negative	31	16	a	16, 31
463	Negative	31	Negative	31	31
471	Negative	31	Negative	b	31
487	Negative	31	16	b	16, 31
497	Negative	31	16	31	16, 31
507	Negative	31	16	b	16, 31
51	Positive	16	16	Not done	16
Total positive	26 (51.0 %)	41 (80.4 %)	37 (72.6 %)	–	48 (94.1 %)

^aBand seen of appropriate size detected on gel electrophoresis but with sequencing reaction failure

^bInsufficient genetic material remaining for re-PCR analysis

Superscripts indicate tumors from same patient