Table 1.

Chromosomal spectrum of RTs found in diagnostic screening

	Warburton [1991]		Zhao et al. [2015]		Schoemaker et al. [2019]
	Number of cases	%	Number of cases	%	Number of cases	%
13;13	0	0	5	0.9	2	0.1
13;14	51	69.9	344	59.0	1,248	62.8
13;15	2	2.7	24	4.1	55	2.8
13;21	1	1.4	16	2.7	20	1.0
13;22	0	0	14	2.4	20	1.0
14;14	0	0	4	0.7	5	0.3
14;15	3	4.1	23	4.0	52	2.6
14;21	12	16.4	86	14.8	390	19.6
14;22	1	1.4	14	2.4	57	2.9
15;15	1	1.4	5	0.9	2	0.1
15;21	0	0	16	2.7	35	1.8
15;22	0	0	9	1.5	35	1.8
21;21	1	1.4	6	1.0	6	0.3
21;22	0	0	14	2.4	38	1.9
22;22	1	1.4	3	0.5	10	0.5
Other	0	0	0	0	12	0.6
Total	73	100.0	583	100.0	1,987	100.0