Abstract
Background: p16INK4a immunohistochemistry has revealed a high rate of positivity in cervical intraepithelial neoplasia grade 2 (CIN2) and more severe conditions (CIN2+). The Lower Anogenital Squamous Terminology Standardization project proposed p16INK4a immunohistochemistry as an ancillary test for CIN. Immunocytochemistry involving dual staining for p16INK4a and Ki-67 in the triage of atypical squamous cells of undetermined significance (ASCUS) and low-grade squamous intraepithelial lesions (LSIL) is reported to be useful in the identification of CIN2+. However, it is unclear whether p16INK4a/Ki-67 immunocytochemistry is of practical relevance for the triage of ASCUS and LSIL in the Japanese screening system. Methods: From 427 women fulfilling the eligibility criteria, 188 ASCUS and 239 LSIL specimens were analyzed. The accuracy of p16INK4a/Ki-67 immunocytochemistry and genotyping of high-risk human papillomaviruses (HPVs) in detecting CIN2+ were compared. Results: p16INK4a/Ki-67 immunocytochemistry was positive in 33.5 % (63/188) of ASCUS, and 36.8 % (88/239) of LSIL specimens. The sensitivity and specificity of p16INK4a/Ki-67 immunocytochemistry was 87.3 % (95 % confidence interval 78.0–93.8 %) and 76.4 % (71.6–80.8 %), respectively. The positive and negative predictive values were 45.7 % (37.6–54.0 %) and 96.4 % (93.4–98.3 %), respectively; positive and negative likelihood ratios were 3.71 and 0.17, respectively. Using the McNemar test, p16INK4a/Ki-67 immunocytochemistry showed equivalent sensitivity but higher specificity than the HPV genotyping test Conclusions: Compared with high-risk HPV genotyping, p16INK4a/Ki-67 immunocytochemistry was a more accurate triage test for identifying CIN2+ in ASCUS and LSIL specimens.
| Original language | English |
|---|---|
| Pages (from-to) | 134-142 |
| Number of pages | 9 |
| Journal | International Journal of Clinical Oncology |
| Volume | 20 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 01-01-2015 |
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All Science Journal Classification (ASJC) codes
- Surgery
- Hematology
- Oncology
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Performance of p16INK4a/Ki-67 immunocytochemistry for identifying CIN2+ in atypical squamous cells of undetermined significance and low-grade squamous intraepithelial lesion specimens : a Japanese Gynecologic Oncology Group study. / Fujii, Takuma; Saito, Miyuki; Hasegawa, Toshihiko; Iwata, Takashi; Kuramoto, Hiroyuki; Kubushiro, Kaneyuki; Ohmura, Mineo; Ochiai, Kazunori; Arai, Hiroharu; Sakamoto, Masaru; Motoyama, Teiichi; Aoki, Daisuke.
In: International Journal of Clinical Oncology, Vol. 20, No. 1, 01.01.2015, p. 134-142.Research output: Contribution to journal › Article
TY - JOUR
T1 - Performance of p16INK4a/Ki-67 immunocytochemistry for identifying CIN2+ in atypical squamous cells of undetermined significance and low-grade squamous intraepithelial lesion specimens
T2 - a Japanese Gynecologic Oncology Group study
AU - Fujii, Takuma
AU - Saito, Miyuki
AU - Hasegawa, Toshihiko
AU - Iwata, Takashi
AU - Kuramoto, Hiroyuki
AU - Kubushiro, Kaneyuki
AU - Ohmura, Mineo
AU - Ochiai, Kazunori
AU - Arai, Hiroharu
AU - Sakamoto, Masaru
AU - Motoyama, Teiichi
AU - Aoki, Daisuke
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Background: p16INK4a immunohistochemistry has revealed a high rate of positivity in cervical intraepithelial neoplasia grade 2 (CIN2) and more severe conditions (CIN2+). The Lower Anogenital Squamous Terminology Standardization project proposed p16INK4a immunohistochemistry as an ancillary test for CIN. Immunocytochemistry involving dual staining for p16INK4a and Ki-67 in the triage of atypical squamous cells of undetermined significance (ASCUS) and low-grade squamous intraepithelial lesions (LSIL) is reported to be useful in the identification of CIN2+. However, it is unclear whether p16INK4a/Ki-67 immunocytochemistry is of practical relevance for the triage of ASCUS and LSIL in the Japanese screening system. Methods: From 427 women fulfilling the eligibility criteria, 188 ASCUS and 239 LSIL specimens were analyzed. The accuracy of p16INK4a/Ki-67 immunocytochemistry and genotyping of high-risk human papillomaviruses (HPVs) in detecting CIN2+ were compared. Results: p16INK4a/Ki-67 immunocytochemistry was positive in 33.5 % (63/188) of ASCUS, and 36.8 % (88/239) of LSIL specimens. The sensitivity and specificity of p16INK4a/Ki-67 immunocytochemistry was 87.3 % (95 % confidence interval 78.0–93.8 %) and 76.4 % (71.6–80.8 %), respectively. The positive and negative predictive values were 45.7 % (37.6–54.0 %) and 96.4 % (93.4–98.3 %), respectively; positive and negative likelihood ratios were 3.71 and 0.17, respectively. Using the McNemar test, p16INK4a/Ki-67 immunocytochemistry showed equivalent sensitivity but higher specificity than the HPV genotyping test Conclusions: Compared with high-risk HPV genotyping, p16INK4a/Ki-67 immunocytochemistry was a more accurate triage test for identifying CIN2+ in ASCUS and LSIL specimens.
AB - Background: p16INK4a immunohistochemistry has revealed a high rate of positivity in cervical intraepithelial neoplasia grade 2 (CIN2) and more severe conditions (CIN2+). The Lower Anogenital Squamous Terminology Standardization project proposed p16INK4a immunohistochemistry as an ancillary test for CIN. Immunocytochemistry involving dual staining for p16INK4a and Ki-67 in the triage of atypical squamous cells of undetermined significance (ASCUS) and low-grade squamous intraepithelial lesions (LSIL) is reported to be useful in the identification of CIN2+. However, it is unclear whether p16INK4a/Ki-67 immunocytochemistry is of practical relevance for the triage of ASCUS and LSIL in the Japanese screening system. Methods: From 427 women fulfilling the eligibility criteria, 188 ASCUS and 239 LSIL specimens were analyzed. The accuracy of p16INK4a/Ki-67 immunocytochemistry and genotyping of high-risk human papillomaviruses (HPVs) in detecting CIN2+ were compared. Results: p16INK4a/Ki-67 immunocytochemistry was positive in 33.5 % (63/188) of ASCUS, and 36.8 % (88/239) of LSIL specimens. The sensitivity and specificity of p16INK4a/Ki-67 immunocytochemistry was 87.3 % (95 % confidence interval 78.0–93.8 %) and 76.4 % (71.6–80.8 %), respectively. The positive and negative predictive values were 45.7 % (37.6–54.0 %) and 96.4 % (93.4–98.3 %), respectively; positive and negative likelihood ratios were 3.71 and 0.17, respectively. Using the McNemar test, p16INK4a/Ki-67 immunocytochemistry showed equivalent sensitivity but higher specificity than the HPV genotyping test Conclusions: Compared with high-risk HPV genotyping, p16INK4a/Ki-67 immunocytochemistry was a more accurate triage test for identifying CIN2+ in ASCUS and LSIL specimens.
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U2 - 10.1007/s10147-014-0688-0
DO - 10.1007/s10147-014-0688-0
M3 - Article
VL - 20
SP - 134
EP - 142
JO - International Journal of Clinical Oncology
JF - International Journal of Clinical Oncology
SN - 1341-9625
IS - 1
ER -