HPV-associated lung cancers: an international pooled analysis

Area of Science:

• Oncology
• Virology
• Epidemiology

Background:

• Human papillomavirus (HPV) is a known cause of cervical cancer.
• An association between HPV and lung cancer has been suggested but not definitively proven.

Purpose of the Study:

• To evaluate the prevalence of HPV DNA in lung cancer patients.
• To investigate the relationship between HPV presence and clinical/demographic factors.
• To compare HPV presence in tumor versus normal lung tissue.

Main Methods:

• International pooled analysis of 27 cross-sectional studies with 3249 patients.
• Detection of HPV DNA, specifically HPV16/18.
• Analysis of clinical, demographic, and geographic data.

Main Results:

• HPV DNA was detected in a small percentage of lung tumors, with significant geographic variation (highest in South/Central America, lowest in Europe).
• HPV16 was more prevalent than HPV18 globally, except in North America.
• HPV DNA was more common in lung tumors than normal lung tissue (OR = 3.86).
• HPV16/18-positive lung cancer was less frequent in White individuals (OR = 0.33) and not associated with gender, smoking, age, histology, or stage.

Conclusions:

• HPV DNA is present in a subset of lung tumors, with notable geographic disparities.
• The findings suggest a potential, though not yet causal, link between HPV and lung cancer.
• Further investigation is required to establish a causal relationship.