<?xml version="1.0" encoding="UTF-8"?><protocol_summary><protocol><id>13244</id><no>GA43360</no><status>Open</status><title>A Phase 1b, Double-Blind, Randomized, Placebo-Controlled, Multicenter Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of Multiple-Ascending Doses of RO7303509 in Patients with Systemic Sclerosis </title><nct_id>NCT05462522</nct_id><sponsor_type>Industrial</sponsor_type><age_group>Adult</age_group><treatment_type>Treatment</treatment_type><phase>I</phase><disease_site>Other</disease_site><PI>Steen, Virginia</PI><institution>Georgetown University Medical Center : Destiny Barksdale</institution><management_group>GUMC Medicine Rheumatology</management_group><item><contact_id>15531</contact_id><item_description>Destiny Barksdale</item_description><js_safe_str>Destiny Barksdale</js_safe_str><email>db1619@georgetown.edu</email></item></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>