ペルオキシソーム病の分類

表1 ペルオキシソーム病の分類

( )内の斜体文字は原因遺伝子

A. ペルオキシソーム形成異常症 (PEX遺伝子異常症)

  • Zellweger spectrum(PEX1,2,3,5,6,10,12,13,14,16,19,26
    • Zellweger症候群 (ZS)
    • 新生児型副腎白質ジストロフィー (NALD)
    • 乳児型Refsum病 (IRD)
  • rhizomelic chondrodysplasia punctata (RCDP) type 1(PEX7
  • rhizomelic chondrodysplasia punctata (RCDP) type 5(PEX5-long isoform

B. 単独酵素欠損症

脂肪酸β酸化系

  • Acyl-CoA oxidase 1 (ACOX1) 欠損症(ACOX1
  • D-bifunctional protein (DBP) 欠損症(HSD17B4
  • Sterol carrier protein X (SCPx) 欠損症(SCP2
  • 2-Methylacyl-CoA racemase (AMACR) 欠損症(AMACR

脂肪酸α酸化系

  • Refsum病 (phytanoyl-CoA hydroxylase 欠損症)(PHYH

プラスマローゲン合成系

  • RCDP type 2 (dihydroxyacetonephosphate acyltransferase 欠損症)(GNPAT
  • RCDP type 3 (alkyldihydroxyacetonephosphate synthase 欠損症)(AGPS
  • RCDP type 4 (fatty acyl-CoA reductase 1欠損症)(FAR1)

過酸化水素分解系

  • 無カタラーゼ血症 (高原氏病)(CAT

グリオキシル酸解毒系

  • 原発性高シュウ酸尿症Ⅰ型 (AGT 欠損症)(AGTX

C. ABCD1遺伝子異常を伴う群

  • 副腎白質ジストロフィー (ALD)(ABCD1
  • Contiguous ABCD1 DXS1357E deletion syndrome (CADDS)(ABCD1+ DXS1357E

Peroxisomal diseases (PD)

A. Peroxisome Biogenesis Disorders (PBD)

  • Zellweger spectrum
    • Zellweger syndrome (ZS)
    • Neonatal adrenoleukodystrophy (NALD)
    • Infantile Refsum disease (IRD)
  • Rhizomelic Chondrodysplasia punctata (RCDP) type 1, type 5

B. Single Enzyme deficiencies

impaired β-oxidation of fatty acids

  • Acyl-CoA oxidase (ACOX1) deficiency
  • D-bifunctional protein (DBP) deficiency
  • Sterol carrier protein 2 (SCPX) deficiency
  • 2-Methylacyl-CoA racemase (AMACR) deficiency

impaired etherphospholipid biosynthesis

  • DHAP-acyltransferase deficiency (RCDP type 2)
  • Alkyl-DHAP synthase deficiency (RCDP type 3)
  • Fatty alcohol reductase 1 (FAR1) deficiency (RCDP type 4)

impaired α-oxidation of fatty acids

  • Classical Refsum disease

impaired hydrogen peroxide metabolism

  • Catalase deficiency

impaired glyoxylate detoxification

  • Hyperoxaluria type I

C. Diseases involved in ABCD1 gene defect

  • X-linked adrenoleukodystrophy (ALD)
  • Contiguous ABCD1 DXS1357E deletion syndrome (CADDS)