Abstract
Background
Sentinel lymph node biopsy (SLNB) is often omitted in selected patients with advanced primary melanoma, although the justification/criteria for omission have been debated.
Objective
We sought to determine whether assessment of frailty could serve as an objective marker to guide selection for SLNB in patients with advanced primary melanoma.
Methods
Patients presenting with clinical stage IIC (ulcerated, > 4 mm Breslow thickness) cutaneous melanoma from January 1999 through June 2019 were included. Frailty was assessed using the Memorial Sloan Kettering Frailty Index (MSK FI), a composite score of functional status and medical comorbidities. Five-year melanoma-specific survival (MSS) and overall survival (OS) were estimated using Cox regression, and predictors of OS were identified using competing risk models.
Results
MSS did not differ between patients who did (n = 451) or did not undergo SLNB (n = 179) [63.2% vs. 65.0%, p = 0.14]; however, omission of SLNB was associated with decreased 5-year OS (29% vs. 44%, p < 0.001). In a multivariable competing risk model, selection for SLNB omission was an independent predictor of death from non-melanoma causes (hazard ratio [HR] 1.7, 95% confidence interval [CI] 1.2–2.3, p < 0.001). After incorporation of the MSK FI score into the multivariable model in this subset, MSK FI (HR 2.4, 95% CI 1.5–4.1, p < 0.001), but not SLNB omission, was an independent predictor of poorer OS.
Conclusion
We observed worse OS in patients with thick melanoma selected not to undergo SLNB, which was attributed to death due to non-melanoma causes. Formal assessment of frailty may provide an objective prognostic measure to guide selective use of SLNB in these patients.
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Acknowledgment
The authors would like to acknowledge Jessica Moore for her editorial support in the production of this paper.
Funding
This research was supported in part by NIH/NCI Cancer Center Support Grant P30 CA008748 to the institution.
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Sharma, A.S., Flynn, J.R., Panageas, K.S. et al. Assessment of Frailty Can Guide Decision Making for Utilization of Sentinel Lymph Node Biopsy in Patients with Thick Melanoma. Ann Surg Oncol 28, 9031–9038 (2021). https://doi.org/10.1245/s10434-021-10212-w
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DOI: https://doi.org/10.1245/s10434-021-10212-w