Case Report: Early recognition of neonatal alpha-1 antitrypsin deficiency: a case of subtle presentation and prompt diagnosis - Report - MDSpire

Case Report: Early recognition of neonatal alpha-1 antitrypsin deficiency: a case of subtle presentation and prompt diagnosis

  • By

  • Vinson James

  • Sydney Darling

  • Catherine Chin

  • Pomalpreet Bajwa

  • Adarsh Pillay

  • Jaime Chu

  • Yoseph Gurevich

  • Vindhya Kamath

  • June 24, 2026

  • 0 min

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Clinical Report: Timely Identification of Neonatal Alpha-1 Antitrypsin Deficiency

Overview

This case study presents a 4-day-old male infant diagnosed with alpha-1 antitrypsin deficiency (A1ATD) by the 8th day of life, following metabolic evaluations after persistent conjugated hyperbilirubinemia and exclusion of infectious causes. The case highlights that A1ATD is not included in routine newborn screening.

Background

Neonatal cholestasis, characterized by conjugated hyperbilirubinemia, requires urgent evaluation to identify potential infectious, metabolic, or structural causes. Alpha-1 antitrypsin deficiency is a rare but significant contributor to neonatal cholestasis, often diagnosed later than the first week of life. Early identification is crucial for management, as A1ATD can lead to severe liver disease.

Data Highlights

No numerical data or trial data presented in the article.

Key Findings

  • A 4-day-old male infant presented with hypothermia, hypoglycemia, and jaundice.
  • Initial evaluation suggested neonatal sepsis; however, persistent conjugated hyperbilirubinemia led to further metabolic evaluation.
  • Alpha-1 antitrypsin deficiency was confirmed by the 8th day of life.
  • The infant's condition improved with supportive management, and he was discharged with follow-up care.

Clinical Implications

Healthcare providers should be aware that alpha-1 antitrypsin deficiency is not included in routine newborn screening panels, which is essential for timely diagnosis and management.

Conclusion

This case illustrates the diagnosis of alpha-1 antitrypsin deficiency in a neonate with conjugated hyperbilirubinemia, emphasizing the need for further evaluation in similar cases.

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  6. Neonatal Cholestasis - Pediatrics - Merck Manual Professional Edition
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