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Table 2 Semen parameters and sperm morphology of men harbouring homozygous SPAG6 variants

From: Homozygous SPAG6 variants can induce nonsyndromic asthenoteratozoospermia with severe MMAF

Subject

F1 II-1

F2 II-1

Reference Valuesa

Age

29

26

Semen parameter

Sample 1

Sample 2

Sample 1

Sample 2

Semen volume (mL)

2.2

3.5

3.4

3.6

 > 1.5

Concentration (106/mL)

107.0

63.9

16.8

27.4

 > 15.0

Motility (%)

2.0

2.7

0

0

 > 40.0

Progressive motility (%)

0.3

0.5

0

0

 > 32.0

Viability (%)

66

NA

61

NA

 > 58.0

Sperm Morphology

 Normal flagella (%)

3.2

 

4.1

 

 > 23.0

 Absent flagella (%)

4.5

 

7.1

 

 < 5.0

 Short flagella (%)

55.3

 

47.6

 

 < 1.0

 Coiled flagella (%)

32.5

 

39.2

 

 < 17.0

 Angulation (%)

3.5

 

1.5

 

 < 13.0

 Irregular caliber (%)

1.0

 

0.5

 

 < 2.0

  1. Abbreviations: NA Not applicable
  2. aReference Values according to the WHO (2010) criteria; Bold characters represent abnormal values