Vaccine preventable cancer is?
**Core Concept**
Cervical cancer is a vaccine-preventable cancer caused by persistent infection with high-risk human papillomavirus (HPV) types, such as HPV-16 and HPV-18. The development of cervical cancer is a multifactorial process involving genetic and environmental factors, with HPV infection being a primary etiological agent.
**Why the Correct Answer is Right**
HPV infection leads to the integration of viral DNA into the host genome, resulting in the expression of oncogenic proteins that disrupt normal cell cycle regulation. The E6 and E7 proteins of HPV-16 and HPV-18 interact with and inactivate the tumor suppressor proteins p53 and Rb, respectively, leading to uncontrolled cell proliferation and cancer progression. The bivalent HPV vaccine (Cervarix) and quadrivalent HPV vaccine (Gardasil) are effective in preventing cervical cancer by inducing immunity against HPV-16 and HPV-18.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because while hepatitis B virus (HBV) infection is a risk factor for hepatocellular carcinoma, it is not a vaccine-preventable cancer in the same way as cervical cancer.
**Option B:** This option is incorrect because lung cancer is a multifactorial disease caused by a combination of genetic and environmental factors, including smoking and asbestos exposure, but it is not primarily vaccine-preventable.
**Option C:** This option is incorrect because while human immunodeficiency virus (HIV) infection increases the risk of various cancers, including cervical cancer, it is not a vaccine-preventable cancer itself.
**Option D:** This option is incorrect because while Epstein-Barr virus (EBV) is associated with certain types of cancer, such as nasopharyngeal carcinoma, it is not a vaccine-preventable cancer in the same way as cervical cancer.
**Clinical Pearl / High-Yield Fact**
The HPV vaccine is most effective when administered before exposure to HPV, highlighting the importance of vaccinating adolescents before the onset of sexual activity.
**Correct Answer: C. Cervical cancer is a vaccine-preventable cancer caused by persistent infection with high-risk human papillomavirus (HPV) types, such as HPV-16 and HPV-18.**