Prof. Michał Witt was invited to take up the duties of Guest Editor of a Special Issue of the International Journal of Molecular Sciences (IF: 4.556, ISSN 1422-0067) entitled “Primary Ciliary Dyskinesia: Genetics, Diagnostic and Therapeutic Perspectives”. Guest Co-Editors are Prof. Ewa Ziętkiewicz and Dr. Zuzanna Bukowy-Bieryłło. According to preliminary plans, the Special Issue is to be published in mid-2021.