Ambispective Observational Multicenter Study on the Efficacy of the Third Dose of Vaccine Anti COVID-19 in Patients Suffering From Solid Tumors Undergoing Oncological Treatment Active.

Ambispective Observational Multicenter Study on the Efficacy of the Third Dose of Vaccine Anti COVID-19 in Patients Suffering From Solid Tumors Undergoing Oncological Treatment Active.

To evaluate the serum neutralizing antibody titre in cancer patients undergoing active treatment against variants (VOC) before and after the third dose of BNT162b2 COVID-19 vaccine.

Inclusion Criteria:

1. Patients aged 18 years or older, regardless of gender;
2. Life expectancy (estimated by the treating doctor) ≥ 6 months;
3. Histological diagnosis confirmed solid neoplasm;
4. Under active treatment
5. Previous two doses of Pfizer anti-SARS-CoV-2 vaccine received (will be considered also patients who have completed the vaccination cycle with other mRNA vaccines - Modern-)
6. All participants subscribed and signed the informed consent form first of enlistment
7. Patients with a positive history of a previous diagnosis are also enrolled laboratory confirmed COVID-19
8. ECOG 0-2

Exclusion Criteria:

1. Inability to sign informed consent