New England Journal of Medicine

A study noted a sharp increase in leucovorin prescriptions dispensed to children (≤17 years of age) after a plan was announced to update the FDA drug label to include cerebral folate deficiency, which may include autism symptoms.

In a child with advanced nephroblastoma, T-cell therapy targeting preferentially expressed antigen in melanoma led to a 69% tumor reduction, with molecular, metabolic, and histologic evidence of complete remission at 200 days.

Among children treated for septic shock, no significant difference was seen in the incidence of death, new renal-replacement therapy, or persistent kidney dysfunction when fluid resuscitation was administered with balanced fluid as compared with 0.9% saline. (Funded by Eunice Kennedy Shriver National Institute of Child Health and Human Development and others; PRoMPT BOLUS ClinicalTrials.gov numbe…

Among patients who received beta-blocker therapy beyond the first year after a myocardial infarction, discontinuation of beta-blocker therapy was noninferior to continuation with respect to a composite of death from any cause, recurrent myocardial infarction, or hospitalization for heart failure. (Funded by Patient-Centered Clinical Research Coordinating Center in the Ministry of Health and Welfa…

Among patients undergoing complex high-risk PCI, a strategy of routine IVUS-guided PCI performed with the use of prespecified stent-optimization criteria was not associated with a lower risk of target-vessel failure than angiography-guided PCI alone. (Funded by Boston Scientific; IVUS-CHIP ClinicalTrials.gov number, NCT04854070.).