Background: In first-line systemic therapy for unresectable recurrent and/or metastatic squamous cell carcinoma of the head and neck (R/M SCCHN), regimens are generally selected by time-to-relapse with 6 months cutoff after platinum (Pt)-containing definitive therapy, Pt-refractory or Pt-sensitive recurrence, but clinical characteristics between Pt-refractory and Pt-sensitive recurrence of R/M SCCHN has not been fully investigated. This study aimed to evaluate pattern of recurrence and efficacy for salvage treatment for recurrence after Pt-containing definitive therapy for R/M SCCHN in a real-world setting.
Methods: We retrospectively reviewed 150 patients treated with Pt-containing definitive therapy and analyzed the pattern of recurrence and efficacy of salvage therapy for 63 patients with R/M SCCHN.
Results: Pt-refractory recurrence, Pt-sensitive recurrence, second primary cancer (SPC), and no relapse occurred in 23.3%, 18.7%, 14.7%, and 43.3% of patients, respectively. In the cases with distant metastatic recurrence, symptomatic recurrence was significantly more common in the Pt-refractory recurrence, while asymptomatic recurrence was significantly more common in the Pt-sensitive recurrence. The timing of detection of SPC was after 2 years in 59.0% of cases after the completion of definitive therapy and 63.6% of SPC were asymptomatic. There was a significant difference in ΔNLR2 (NLR after definitive therapy minus NLR at detection recurrence; = 0.028) and in prognosis after the detection of recurrence for the overall population ( = 0.021), and for salvage treatment group ( = 0.023), and systemic therapy group ( = 0.003) between Pt-refractory and Pt-sensitive groups.
Conclusions And Significance: Our analysis revealed the recurrence pattern after Pt-containing definitive therapy and showed the validity of dividing patients into Pt-refractory and Pt-sensitive recurrence with different prognosis in salvage therapy, especially systemic therapy.
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| http://dx.doi.org/10.3389/fonc.2022.876193 | DOI Listing |
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