<?xml version="1.0" encoding="UTF-8"?><protocol_summary><protocol><id>8883</id><no>ENLIGHTEN-NCT04140305</no><status>Open (affiliates only)</status><title>A Multicenter, Longitudinal, Open-Label, Single-Arm Study Describing Cognitive Processing Speed Changes in Relapsing Multiple Sclerosis Subjects Treated With Ozanimod (RPC-1063)</title><secondary_protocol_no>RPC-1063-MS-001</secondary_protocol_no><nct_id>NCT04140305</nct_id><sponsor_type>Industrial</sponsor_type><age_group>Adult</age_group><treatment_type>Treatment</treatment_type><disease_site>Diseases Of The Nervous System</disease_site><PI>Amjad, Faria</PI><institution>Georgetown University Medical Center; Lombardi Comprehensive Cancer Center</institution><management_group>GUMC Neurology</management_group></protocol><sipVersion>2026.1.0 Build 16</sipVersion><copyright> &lt;a href="https://advarra.com" target="_blank"&gt;&amp;copy; 2026 Advarra, Inc.&lt;/a&gt; </copyright></protocol_summary>