Immunoreactive trypsin in Shwachman's syndrome.

Area of Science:

• Biochemistry
• Pediatrics
• Genetics

Background:

• Shwachman's syndrome is a rare genetic disorder.
• It primarily affects the pancreas, leading to exocrine pancreatic insufficiency.
• Early diagnosis is crucial for managing complications.

Observation:

• Two infants diagnosed with Shwachman's syndrome presented with abnormally low immunoreactive trypsin concentrations.
• This observation was made during routine diagnostic testing.

Findings:

• The measured low immunoreactive trypsin levels were significantly lower than typically observed in several hundred assays.
• This specific finding strongly indicates pancreatic acinar deficiency in infants.
• The low concentration is a potential early diagnostic marker for Shwachman's syndrome.

Implications:

• This study highlights the diagnostic utility of immunoreactive trypsin testing in infants.
• It suggests that persistently low levels may be a specific indicator for Shwachman's syndrome.
• Further research can validate this marker for earlier and more accurate diagnosis.