<?xml version="1.0" encoding="UTF-8"?><protocol_summary><protocol><id>14285</id><no>AIS-D04</no><status>Open (affiliates only)</status><title>A PHASE 1B, OPEN-LABEL STUDY TO ASSESS THE&#xD;
SAFETY, EFFICACY, PHARMACOKINETICS, AND&#xD;
PHARMACODYNAMICS OF ALPN-303 IN SUBJECTS&#xD;
WITH AUTOIMMUNE CYTOPENIAS (RUBY-4)</title><nct_id>NCT05757570</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>Broome, Catherine</PI><institution>Georgetown University Medical Center; Lombardi Comprehensive Cancer Center</institution><management_group>GUMC Medicine Hem-Onc</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>