Table 1A Plasma amino acid and PRODH genetic analysis in our patient and literature review. A. Analysis of plasma amino acids.

From: Hyperprolinemia type I caused by homozygous p.T466M mutation in PRODH

Amino acid

Reference (μmol/L)

Age: 8 years

Age: 10 years 2 months

 Hydroxyproline

≤21.6

11.3

28.0

 Threonine

66.5–188.9

81.8

101.2

 Serine

72.4–164.5

106.9

122.3

 Asparagine

44.7–96.8

43.5

60.4

 Glutamic acid

12.6–62.5

28.0

18.3

 Glutamine

422.1–703.8

494.6

573.0

 Proline

77.8–272.7

530.2

624.5

 Glycine

151.0–351.0

203.4

184.9

 Alanine

208.7–522.7

292.7

390.3

 Citrulline

17.1–42.6

29.2

21.2

 Valine

147.8–307.0

130.5

218.2

 Cystine

13.7–28.3

9.1

11.9

 Methionine

18.9–40.5

16.0

28.6

 Isoleucine

43.0–112.8

34.9

65.5

 Leucine

76.6–171.3

67.7

128.2

 Tyrosine

40.4–90.3

57.9

91.6

 Phenylalanine

42.6–75.7

60.0

90.6

 Histidine

59.0–92.0

68.0

78.4

 Tryptophan

37.0–74.9

59.1

71.1

 Ornithine

31.3–104.7

33.1

53.5

 Lysine

108.7–242.2

94.2

149.6

 Arginine

53.6–133.6

61.7

101.4

 Total AA

2068.2–3510.3

2587.9

3248.7

 NEAA

1381.6–2379.4

1966.7

2317.3

 EAA

660.0–1222.3

612.2

931.4

 BCAA

265.8–579.1

233.1

411,9

 EAA/NEAA

0.40–0.63

0.31

0.4

 BCAA/Total AA

0.11–0.18

0.09

0.13

 Fisher ratio

2.43–4.40

1.98

2.26

  1. AA: amino acids, BCAA: branched-chain amino acids, EAA: essential amino acids, NEAA; non-essential amino acids.
  2. At the age of 8 years, he ate fish but had little pork and meat. At the age of 10 years and 2 months, he had consumed more meat and pork than before.