Table 2.

Patient Demographics from the Extended TGCT Series Analyzed by Direct Sanger Sequencing

Total number of patients included	71
Bilateral metachronous⁎ TGCT	57
Bilateral synchronous† TGCT	11
EGCT and unilateral TGCT	2
EGCT and bilateral synchronous† TGCT	1
Site of tumors included (number of tumors)
TGCT	140
EGCT	3
Histology of tumors (number of tumors)
Sem‡	91
Nsem§	52
Age at diagnosis of first germ cell tumor (years)
Total: median (range)	29 (18-54)
Sem: median (range)	31 (22-54)
Nsem: median (range)	26 (18-47)
Time between first and second germ cell tumor (months)
Median (range)	57 (0-263)
Percentage of tumor tissue in samples
Median (range)	75 (5-100)
Number of samples with < 20% tumor tissue	14

Abbreviations: Sem, seminoma; NSem, non-seminoma.

^⁎> 2 months before subsequent TGCT.

^†≤ 2 months before subsequent TGCT.

^‡Pure seminoma.

^§Non-seminoma independent of seminoma components.