On November 14th 2018, The Nencki Institute and The Marceli Nencki Foundation for Support the Biological Sciences, organized the scientific session "From the primers to Ciliopathy" for the 90th anniversary of the birth of Professor Leszek Kuźnicki. The session was opened by the director of the Nencki Institute, prof. dr hab. Agnieszka Dobrzyń. During the session, Marcin Wajda, director of the Department of Regional Development and European Funds of the Marshal's Office, handed the Pro Mazovia Medal to prof. Leszek Kuźnicki, in recognition of his professional, social and public contributions to the Mazowieckie Voivodeship. Professor Jacek Kuźnicki and prof. Michał Opas shared with participants their memories regarding the life and scientific achievments of the jubilee. In the second part of the session, chaired by dr Ewa Joachimiak, the latest achievements in the field of cilia biology and ciliopathy were presented by dr hab. Paweł Niewiadomski, prof. Jacek Geartig, prof. Ewa Ziętkiewicz, and dr hab. Dorota Włoga.