新生児重症高トリグリセリド血症:新規リポタンパク質リパーゼ遺伝子スプライシング変異体
P Anil Kumar1, Hari Prasath C2
1Paediatrics, Professor & Head of the Department, Dr NTR University of Health Sciences, Siddhartha medical college, Vijayawada, Andhra Pradesh, India.
BMJ case reports
|December 21, 2025
まとめ
リポタンパク質リパーゼ(LPL)遺伝子の新規変異が新生児の重症高トリグリセリド血症を引き起こした。早期診断と特殊な食事療法により著明な改善が見られ、まれな代謝性疾患における遺伝子検査の必要性が強調された。
科学分野:
- 遺伝学
- 代謝性疾患
- 小児科学
背景:
- 家族性カイロミクロン血症症候群(FCS)は、重症高トリグリセリド血症を特徴とするまれな遺伝性疾患である。
- 膵炎や心血管疾患などの重篤な合併症を防ぐためには、早期診断と管理が不可欠である。
研究 の 目的:
- リポタンパク質リパーゼ(LPL)遺伝子の新規変異による新生児の重症高トリグリセリド血症の症例報告。
- まれな代謝性疾患における早期の遺伝子評価と個別化された治療の重要性を強調すること。
主な方法:
- 呼吸窮迫および発熱症状を呈する新生児の臨床像。
- 血清トリグリセリドおよびコレステロール値、網膜脂血症を含む診断検査。
- LPL遺伝子の変異を特定するための遺伝子解析。
主要な成果:
- 重症高トリグリセリド血症および網膜脂血症を呈した。
- LPL遺伝子イントロン5に新規のホモ接合性バリアント(c.776-5C>G)が同定された。
- 脂肪制限食および中鎖トリグリセリド補給による管理で、生化学的改善が劇的に見られた。
結論:
- 本症例は、家族性カイロミクロン血症症候群を引き起こす新規LPL遺伝子変異を強調するものである。
- 新生児のまれな代謝性疾患の管理には、早期の遺伝子診断と集学的で個別化された治療アプローチが不可欠である。
- 迅速な介入により、重篤な合併症を防ぎ、患者の転帰を改善することができる。
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