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Integrating MMP-7 into a time-sensitive evaluation

MMP-7 may add meaningful evidence when evaluating infant cholestasis, but the result remains assay-specific and clinically contextual.

Clinical role

Published studies across multiple populations have reported higher serum MMP-7 concentrations in biliary atresia than in non-biliary-atresia cholestasis. Large cohorts and systematic reviews support further clinical integration and standardization.

MMP-7 should be treated as an adjunct to—not a substitute for—fractionated bilirubin, laboratory assessment, imaging, pathology where obtained, and definitive evaluation directed by pediatric hepatology and surgery.

Avoid universal thresholds

Decision thresholds are not automatically transferable among ELISA, bead-based, TR-FRET, point-of-care, or other platforms. Calibration, analytical range, age distribution, disease spectrum, preanalytical conditions, and validation population all matter.

Interpretation framework

Questions to ask before acting on a result

A

Analytical

Which platform produced the value? What units, measuring range, imprecision, interference profile, and quality controls apply?

P

Population

How old is the infant? What comparator population informed the laboratory’s interval or decision threshold?

C

Clinical

Does the result agree with conjugated bilirubin, stool color, ultrasound, trajectory, and the complete differential diagnosis?

Potential contribution

  • Support risk stratification among infants with cholestasis
  • Add a noninvasive data point early in evaluation
  • Help inform the urgency of specialist coordination when interpreted with other findings
  • Provide a quantitative marker for ongoing research

Important limitations

  • Not independently confirmatory or exclusionary
  • Values are method-dependent and may not be interchangeable
  • Performance may differ by age, population, and disease spectrum
  • Published cutoffs require local analytical and clinical context
  • Evidence and regulatory frameworks continue to evolve

Research library

Go directly to the evidence

Review the latest multicenter studies, meta-analyses, validation cohorts, foundational biomarker papers, and clinical guidance.

Browse publications

Educational use only

This page does not establish a diagnostic algorithm, patient-specific recommendation, clinical cutoff, or standard of care. Clinicians should use current guidance and institutional protocols.