2024, Number 6
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Rev Mex Pediatr 2024; 91 (6)
Risk factors associated with cisplatin nephrotoxicity in cancer patients
Maceda-Nazario ND, Zurita-Cruz JN, Zepeda-Martínez CC, Alegría-Torres GA, Betanzos-Cabrera Y
Language: Spanish
References: 14
Page: 222-227
PDF size: 350.23 Kb.
ABSTRACT
Introduction: cisplatin-associated nephrotoxicity is primarily related to the accumulation of metabolites in proximal renal tubule cells.
Objective: to identify risk factors associated with nephrotoxicity in pediatric cancer patients who received cisplatin.
Material and methods: retrospective cohort study. Patients with solid tumors treated between 2015 and 2021 who received cisplatin as part of their oncological treatment were included. All were followed until they completed the cisplatin regimen. Clinical and laboratory data were recorded. Magnesium sulfate use, nephrotoxic administration, cumulative cisplatin dose, and changes in renal function (creatinine and glomerular filtration rate [GFR]) were documented for each chemotherapy cycle. Nephrotoxicity was defined as an increase in serum creatinine > 0.5 mg/dL from baseline.
Statistical analysis: comparisons between groups were made using the χ
2, Fisher's exact, and Mann-Whitney U tests. Control of confounding variables was with Cox proportional hazards (HR).
Results: a total of 101 patients were studied; the median age was 11 years, and 62.4% were men. Median serum creatinine increased from 0.47 mg/dL to 0.72 mg/dL at the end of surveillance, while GFR decreased from 120 to 82 mL/min/1.73 m
2. Nephrotoxicity was present in 23.8% of patients, and tubulopathy in 14.8%. Magnesium sulfate administration (HR 0.233; 95% CI 0.926-0.587; p = 0.002) and higher serum phosphorus levels before the start of chemotherapy (HR 0.529; 95% CI 0.315-0.888; p = 0.016) were determined as protectors for this complication.
Conclusions: in pediatric cancer patients, the incidence of cisplatin-induced nephrotoxicity is approximately 20%. The administration of magnesium sulfate and higher serum phosphorus concentrations are protective factors for the development of nephrotoxicity.
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