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Drug Safety-related Labeling Changes (SrLC)

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VILTEPSO (NDA-212154)

(VILTOLARSEN)

Safety-related Labeling Changes Approved by FDA Center for Drug Evaluation and Research (CDER)

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03/10/2021 (SUPPL-2)

Approved Drug Label (PDF)

5 Warnings and Precautions

5.1 Kidney Toxicity

Additions underlined

Only urine expected to be free of excreted VILTEPSO should be used for monitoring of urine protein. Urine obtained on the day of VILTEPSO infusion prior to the infusion, or urine obtained at least 48 hours after the most recent infusion, may be used. Alternatively, use a laboratory test that does not use the reagent pyrogallol red, as this reagent has the potential to cross react with any VILTEPSO that is excreted in the urine and thus lead to a false positive result for urine protein.

If a persistent increase in serum cystatin C or proteinuria is detected, refer to a pediatric nephrologist for further evaluation.