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Year : 2021  |  Volume : 17  |  Issue : 1  |  Page : 204-210

Comparison of treatment response in cervical carcinoma patients infected with human papillomavirus 16 and human papillomavirus 18 who are treated with chemoradiation

Vydehi Institute of Medical Sciences and Research Centre, Bengaluru, Karnataka, India

Correspondence Address:
Rishabh Kumar
B 58, South City 1, Gurgaon - 122 007, Haryana
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jcrt.JCRT_177_19

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Objectives: The primary objective of this study was to compare the treatment response of cervical carcinoma patients infected with human papillomavirus (HPV) 16 and HPV 18 who are treated with chemoradiation. Materials and Methods: Ninety-six biopsy-proven cervical cancer patients, suitable for curative treatment with definitive radio-chemotherapy with International Federation of Gynecology and Obstetrics Stage IB2–IIIB, were included in this prospective study. HPV testing was done using TRUPCR® HPV 16 and 18 real-time polymerase chain reaction kit. All the patients received a dose of 83–90 Gy total equieffective dose to the high risk clinical target volume(HRCTV) using tele- and brachytherapy. Results: Of the 96 patients, 79 (82.3%) patients were positive for HPV DNA. Seventy-three patients showed HPV genotype 16 positivity and six patients were positive for genotype 18. The response was correlated with HPV genotype. There was a statistically significant increase in complete radiological response in HPV 16 compared to HPV 18 and negative groups at 3 months, 80.8%, 50%, and 52.9%, respectively (χ2 = 36.5, P < 0.001). There was also a statistically significant increase in clinical response at 3 months in HPV 16 group compared to HPV 18 and negative groups, 87.5%, 50%, and 50%, respectively (χ2 = 29.9, P < 0.001). The age, volume of the disease, overall treatment time, average hemoglobin level, and the number of blood transfusions did not have any correlation. Conclusion: HPV genotype 16 positivity shows higher complete response in cervical carcinoma patients treated with definitive chemoradiation compared to HPV 18 genotype. Further HPV genotyping could potentially help stratify cervical cancer patients for more effective therapeutic regimens.

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