Treatment of Glycogen Storage Disease Type I with Hypocitraturia and Nephrolithiasis or Nephrocalcinosis

In patients with glycogen storage disease type I (GSD I), hypocitraturia — reduced urinary citrate excretion — is a recognised renal complication. When combined with nephrolithiasis or nephrocalcinosis, or where concomitant hypercalciuria is present, it constitutes a clinical scenario that requires specific management to reduce the risk of further urinary calcium precipitation.

Clinical Scenario

Hypocitraturia Nephrolithiasis / Nephrocalcinosis

Low urinary citrate levels in GSD I create conditions that favour calcium precipitation in the urinary tract. Citrate supplementation is indicated in this setting, particularly when there is a history of nephrolithiasis or nephrocalcinosis, or when hypercalciuria co-exists.

Treatment Approach

Management involves oral citrate supplementation to augment urinary citrate excretion and favourably alter the urinary milieu. The formulation of choice varies by individual patient factors. The complete regimen — including formulation selection, dosing guidance, and monitoring strategy — is set out in the full structured protocol.

Treatment target: Achieve at least 300 mg/g creatinine urinary citrate on spot urine ratios.

Instant Access to Structured Evidence-Based Regimens

References

DOI: 10.1038/gim.2014.128

With hypocitraturia, citrate supplementation should be considered, especially if there is concomitant hypercalciuria or a history of nephrolithiasis or nephrocalcinosis.
Oral citrate supplementation will augment citrate excretion, favorably altering the urinary milieu to decrease the chances of urinary calcium precipitation and, as a result, is likely very beneficial in GSD I patients with low urinary citrate levels.
In individuals with normal renal function, potassium citrate is preferred over sodium citrate because higher sodium intake is linked to greater urinary calcium excretion.
With citrate supplementation, the aim is to achieve at least 300 mg/g creatinine on spot urine ratios.

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