Immunodeficiency and cancer: mechanisms involved

Area of Science:

• Immunology
• Oncology
• Cancer Research

Background:

• The relationship between immunodeficiency and cancer development (cancerogenesis/leukemogenesis) is complex.
• Antitumor immunity, both inherent and adaptive, plays a crucial role in host defense against cancer.
• Factors influencing tumor-host interactions include neoplastic cell properties, the tumor microenvironment, and immune system components.

Purpose of the Study:

• To explore the potential links between immunodeficiency and the development of cancer.
• To discuss the mechanisms of antitumor immunity and their potential failure in the context of immunodeficiency.
• To evaluate the significance of impaired antitumoral versus antiviral immunity in cancer incidence.

Main Methods:

• Review of existing literature and data on immunodeficiency and cancer incidence.
• Discussion of various factors affecting tumor-host interactions, including cellular and humoral immunity.
• Analysis of the effectiveness of immune responses against tumors at different stages.

Main Results:

• Patients with inherited or acquired immunodeficiency exhibit a higher incidence of malignant neoplasms.
• The immune system's ability to reject established, large tumors is minimal.
• Immune responses are potentially more effective against early-stage or metastatic tumor cells.

Conclusions:

• A compromised immune system significantly increases cancer risk.
• Immune surveillance is most effective during the initial phases of cancer development.
• Further research is needed to clarify the roles of specific immune deficiencies in cancerogenesis.