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Organ preservation following radiation therapy and concurrent intra-arterial low dose cisplatin infusion for advanced T2 and T3 laryngeal cancer: Long-term clinical results from a pilot study.

ABSTRACT: Background:This pilot study evaluated the long-term outcomes of patients with advanced T2 or T3 squamous cell carcinoma of the larynx (SCC-L) who were treated with selective intra-arterial cisplatin and concomitant radiotherapy (RADPLAT). Methods:We retrospectively investigated the data of 49 patients with advanced T2 or T3 SCC-L who received a RADPLAT regimen with low-dose cisplatin. Results:The 5-year locoregional control, disease-specific survival, and overall survival rates were 83.3%, 88.1%, and 82.6%, respectively, while the 5-year freedom from laryngectomy, laryngectomy-free survival, and laryngo-esophageal dysfunction-free survival rates were 89.6%, 79.4%, and 77.1%, respectively. The incidences of grade 3-4 hematologic and nonhematologic toxicities were 18% and 6%, respectively. Although two patients (4%) developed late toxicities within 5?years following RADPLAT, no other events were noted beyond 5?years. Conclusion:This pilot study demonstrated that RADPLAT is feasible and safe and yielded favorable survival outcomes and functional laryngeal preservation in patients with advanced T2 or T3 SCC-L. Level of evidence:3.

SUBMITTER: Ono T

PROVIDER: S-EPMC7042651 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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Organ preservation following radiation therapy and concurrent intra-arterial low dose cisplatin infusion for advanced T2 and T3 laryngeal cancer: Long-term clinical results from a pilot study.

Ono Takeharu T Tanaka Norimitsu N Tanoue Syuichi S Miyata Yusaku Y Muraki Koichiro K Tsuji Chiyoko C Ogo Etsuyo E Aso Takeichiro T Chitose Shun-Ichi SI Shin Buichiro B Kakuma Tatsuyuki T Etoh Hidehiro H Hattori Chikayuki C Abe Toshi T Umeno Hirohito H

Laryngoscope investigative otolaryngology 20200108 1

<h4>Background</h4>This pilot study evaluated the long-term outcomes of patients with advanced T2 or T3 squamous cell carcinoma of the larynx (SCC-L) who were treated with selective intra-arterial cisplatin and concomitant radiotherapy (RADPLAT).<h4>Methods</h4>We retrospectively investigated the data of 49 patients with advanced T2 or T3 SCC-L who received a RADPLAT regimen with low-dose cisplatin.<h4>Results</h4>The 5-year locoregional control, disease-specific survival, and overall survival r ...[more]

PMID: 32128431

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Project description:For long, the treatment of locoregionally advanced laryngeal and hypopharyngeal squamous cell cancers (SCC) consisted of either total laryngectomy (TL) or definitive radiotherapy (RT). The development of induction cisplatin plus 5-fluorouracil (PF) and the correlation between chemosensitivity and radiosensitivity in previously untreated patients opened a new era of treatment aiming at laryngeal preservation (LP). The fundamental concept was to employ induction PF in order to select patients for subsequent treatment with either TL or RT according to tumor response to PF. The first two trials (VALGSG for laryngeal SCC and EORTC 24891 for hypopharyngeal SCC) concluded that such an approach could preserve nearly 60% of larynx without deleterious impact on survival. The EORTC 24954 trial compared 4 cycles of induction PF followed by RT in good responders vs. alternating PF-RT in laryngeal and hypopharyngeal SCC. There was no significant difference in 5-year overall survival with a functional larynx between the two arms (31 vs. 35%). The GORTEC 2000-01 trial compared induction PF to induction PF plus docetaxel (TPF) both followed by RT in good responders in larynx and hypopharynx SCC. The 5-year LP was significantly higher in the TPF arm (60 vs. 39%) but without a difference in survival. The RTOG 91-11 trial compared induction PF followed by RT in good responders vs. concurrent chemoradiotherapy (chemo-RT) vs. RT alone in laryngeal SCC. There was no significant difference in 5-year laryngectomy-free survival between the patients treated with induction chemotherapy (44%) vs. those treated with chemo-RT (47%), both being superior to RT alone (34%). At 5 years, LP was superior with chemo-RT: 84 vs. 71% with induction PF. Two phase II trials explored the role of cetuximab (E) in LP in laryngeal and hypopharyngeal SCC. The TREMPLIN trial compared RT+E or chemo-RT (RT + P) after TPF. The DeLOS-II trial compared TPE followed by RT+E vs. TP followed by RT. However, these trials failed to indicate an advantage for the incorporation of E in the treatment paradigm. To date, two approaches for LP have been validated: induction TPF followed by RT for laryngeal and hypopharyngeal SCC and concurrent chemo-RT for laryngeal SCC. An ongoing trial (SALTORL) is comparing these two approaches, induction TPF and chemo-RT, in laryngeal/ hypopharyngeal SCC.

Dataset Information

Organ preservation following radiation therapy and concurrent intra-arterial low dose cisplatin infusion for advanced T2 and T3 laryngeal cancer: Long-term clinical results from a pilot study.

Publications

Organ preservation following radiation therapy and concurrent intra-arterial low dose cisplatin infusion for advanced T2 and T3 laryngeal cancer: Long-term clinical results from a pilot study.

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