{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T02:12:08Z","timestamp":1792548728958,"version":"4.5.0"},"reference-count":45,"publisher":"American Society of Clinical Oncology (ASCO)","issue":"7","content-domain":{"domain":["ascopubs.org"],"crossmark-restriction":true},"short-container-title":["J Clin Oncol"],"published-print":{"date-parts":[[2026,3,1]]},"abstract":"<jats:sec>\n                    <jats:title>PURPOSE<\/jats:title>\n                    <jats:p>Surgical axillary staging in patients with node-positive breast cancer (BC) who converted to clinical node negativity through neoadjuvant chemotherapy (NACT) has changed significantly in recent years. Targeted axillary dissection (TAD) and target lymph node (TLN) biopsy (TLNB) became increasingly popular. However, data comparing marking techniques for the TLN are limited. Here, we evaluate marking techniques in the largest prospective cohort worldwide.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>MATERIALS AND METHODS<\/jats:title>\n                    <jats:p>Among patients from the ongoing prospective multicenter AXSANA (EUBREAST-03) study who received TLN marking and TAD\/TLNB, we evaluated different marking methods with respect to detection and removal rates and clinical performance.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS<\/jats:title>\n                    <jats:p>\n                      Until January 6, 2025, 6,129 patients from 26 countries were enrolled. Of these patients, 2,596 had \u22651 TLN marked before NACT and completed surgery; 13.3% of the patients had \u22654 suspicious nodes at diagnosis. Pre-NACT TLN marking used a clip in 2,003 patients (77.2%), magnetic seed in 287 (11.1%), carbon ink in 192 (7.4%), radar marker in 119 (4.6%), radioactive seed in 18 (0.7%), radiofrequency identification device (RFID) in 12 (0.5%), or other methods in two (0.1%). One TLN was marked in 2,427 patients (93.5%), two TLNs in 138 (5.3%), and \u22653 in 27 patients (1%). Targeted removal of the TLN was planned in 2,100 patients (80.9%; TAD in 2,076 [80.0%] and TLNB in 24 [0.9%]). The TLN was detected and removed by TAD\/TLNB in 1,915 patients (91.2%). TLN detection rate was the highest in patients whose TLNs were marked pre-NACT with markers suitable for probe-guided detection (96.6%; radioactive seed: 100%, magnetic seed: 96.9%, radar marker: 96.1%, RFID: 90%), followed by carbon ink (94.9%) and clip (89.6%;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; .001).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSION<\/jats:title>\n                    <jats:p>This large prospective analysis of patients with initially clinically node-positive BC receiving NACT demonstrates that probe-guided detection markers used to mark metastatic nodes before NACT provide superior detection rates.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1200\/jco-25-01921","type":"journal-article","created":{"date-parts":[[2026,1,21]],"date-time":"2026-01-21T20:59:28Z","timestamp":1769029168000},"page":"575-585","update-policy":"https:\/\/doi.org\/10.1200\/crossmark","source":"Crossref","is-referenced-by-count":6,"title":["Marking Techniques for Target Lymph Nodes in Node-Positive Breast Cancer Treated With Neoadjuvant Therapy in the AXSANA\/EUBREAST-03\/AGO-B-053 Study"],"prefix":"10.1200","volume":"44","clinical-trial-number":[{"clinical-trial-number":"nct04373655","registry":"10.18810\/clinical-trials-gov"}],"author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2374-9482","authenticated-orcid":true,"given":"Maggie","family":"Banys-Paluchowski","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology, University Hospital of Schleswig-Holstein, L\u00fcbeck, 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