It is our great pleasure to invite you to take part in the major event 11th World Congress on Rare Diseases and Orphan Drugs which is mainly focusing on how Explore the Recent Advancements in Rare Diseases Research which was scheduled on 06-07 September 2021 in Berlin, Germany. The conference theme also includes the following areas: Rare Diseases in Neurology, Rare Mental and Behavioural Disorders, Rare Pediatrics Diseases, Immunological Rare Diseases Rare Diseases in Nephrology, Rare Dermatological Disorders, Rare Oncology Disorder, Rare Diseases of Lymphatic System Challenges in Rare Diseases Treatment, Different Types of Rare Diseases, Rare Infectious Diseases and Immune Deficiencies Rare Diseases in Cancer, Viral Infectious Diseases, Sexually Transmitted Diseases, COVID-19 and Impact on Healthcare Orphan Drugs