<?xml version="1.0" encoding="UTF-8"?><protocol_summary><protocol><id>16021</id><no>ALTE2321-NCT06410209</no><status>Open</status><title>Walking Juntos: Developing and Testing a Culturally-Tailored Mobile Health and Social Media Physical Activity Intervention Among Adolescent and Young Adult Childhood Cancer Survivors</title><secondary_protocol_no>ALTE2321</secondary_protocol_no><nct_id>NCT06410209</nct_id><sponsor_type>National</sponsor_type><age_group>Children</age_group><treatment_type>Supportive Care</treatment_type><phase>II</phase><scope>National</scope><disease_site>Other</disease_site><PI>Pudela, Caileigh</PI><oncology_group>Pediatrics<DOWG_name>Oncology Group</DOWG_name></oncology_group><management_group>Lombardi Comprehensive Cancer Center (LCCC)</management_group><item><contact_id>14386</contact_id><item_description>Courtney Hope</item_description><js_safe_str>Courtney Hope</js_safe_str><email>ch1398@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>