Table 1b. Characteristics of TGCT samples used in study – histology and age of diagnosis (of first tumour).

	Seminoma		Non-seminoma		Mixed histology		Unknown		All histology (and unknown histology)
Group	Number of cases	Age of diagnosis	Number of cases	Age of diagnosis	Number of cases	Age of diagnosis	Number of cases	Age of diagnosis	Number of cases	Age of diagnosis
Family history	81 (0.52)	37.22	65 (0.41)	28.14	11 (0.07)	34.54	10	29.22	167	33.08
Sporadic	38 (0.40)	35.5	42 (0.45)	30.23	14 (0.15)	31.43	2	47.5	96	32.85
UDT	6 (0.86)	28.16	0 (0.00)	—	1 (0.14)	45	1	42	8	32
Total	125	36.26	107	28.97	26	33.26	13	33.97	271	32.97

GCT=testicular germ cell tumour; UDT=undescended testis.