<?xml version="1.0" encoding="UTF-8"?><protocol_summary><protocol><id>16045</id><no>ATRI-003</no><status>Open</status><title>Longitudinal Early-onset Alzheimer's Disease Study Protocol</title><nct_id>NCT03507257</nct_id><sponsor_type>Institutional</sponsor_type><age_group>Adult</age_group><treatment_type>Observational</treatment_type><disease_site>Other</disease_site><PI>Turner, Raymond</PI><institution>Georgetown University Medical Center : Jessica Mallory; Lombardi Comprehensive Cancer Center : Jessica Mallory</institution><item><contact_id>7622</contact_id><item_description>Jessica Mallory</item_description><js_safe_str>Jessica Mallory</js_safe_str><email>JP1715@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>