<?xml version="1.0" encoding="UTF-8"?><protocol_summary><protocol><id>16231</id><no>PCORINOSES</no><status>Open</status><title>The NOSES study-NASAL STEROIDS, IRRIGATION, ORAL ANTIBIOTICS, AND SUBGROUP TARGETING FOR EFFECTIVE MANAGEMENT OF SINUSITIS</title><nct_id>NCT06076304</nct_id><sponsor_type>Externally Peer-Reviewed</sponsor_type><age_group>Adult</age_group><treatment_type>Other</treatment_type><phase>IV</phase><scope>National</scope><disease_site>Other</disease_site><PI>Merenstein, Daniel</PI><institution>Georgetown University Medical Center; Lombardi Comprehensive Cancer Center</institution></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>