. 2020 Jan 23;106(2):153–169. doi: 10.1016/j.ajhg.2019.12.010

Table 2.

Semen Characteristics of Infertile Individuals with Identified TTC12 Mutations

								Flagellum Defects
Individuals	pH	Volume (ml)	Sperm Count (10⁶/mL)	Total Motility (%)	Progressive Motility (%)	Vitality (%)	Typical Forms (%)	Absent	Short	Irregular Caliber	Coiled	Multiple
DCP791	ND	ND	21	0^b	0^b	75	36	7	0	0	10	0
DCP153	7.9	4.5	81	0^b	0^b	68	33	2	1	1	6	1
Reference values^a	7.2	1.5	15	40	32	58	23	5	1	2	17	1

Values are expressed in percent, unless otherwise specified. ND: not determined.

According to the World Health Organization (WHO) standards²³ and the distribution range of morphologically abnormal spermatozoa observed in fertile individuals.³³ i

Abnormal values.