[1] Lancelotti was born in the city of São Paulo, in the district of Belém, the second of the three children of the couple Wilma Ferrari and Milton Fagundes Lancellotti.

Lancelotti started his formal education at Educandário Espírito Santo, maintained by the Missionary Servants of the Holy Ghost, in Tatuapé.

In the meantime, he completed a nursing assistant course at Santa Casa de Misericórdia in Bragança Paulista and started to practice the profession.

[4] Lancelotti works with juvenile offenders, inmates on assisted liberty, HIV / AIDS patients and low-income and homeless populations.

As episcopal vicar of the People of the Street of the Archdiocese of São Paulo, he is in charge of several municipal projects to assist the needy population, such as the program "A Gente na Rua", formed by community health agents, former homeless people The Human Rights Commission of the Brazilian Bar Association gave him the Franz de Castro Holzwarth Award in 2000 for his work against the systematic violation of the rights of children and adolescents.