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Table 1 Classification of two RCC sets and their clinical characteristics

From: Integrative genome-wide expression profiling identifies three distinct molecular subgroups of renal cell carcinoma with different patient outcome

   RCC microarray set RCC TMA set
   A B C   A B C  
   N (%) N (%) N (%) N (total) N (%) N (%) N (%) N (total)
Histological ccRCC 48 (65) 16 (22) 10 (13) 74 39 (27) 66 (45) 41 (28) 146
subtype pRCC 1 (5) 6 (32) 12 (63) 19 0 17 (52) 16(48) 33
  chRCC 0 1 (50) 1 (50) 2 0 7 (70) 3 (30) 10
  cc/pRCC 0 0 2 (100) 2 - - - -
Tumor stage pT1/pT2 32 (52) 16 (26) 14 (22) 62 27 (28) 48 (51) 20 (21) 95
  pT3/pT4 17 (49) 7 (20) 11 (31) 35 12 (14) 39 (45) 36 (41) 87
Fuhrman grade grade 1 3 (43) 1 (14) 3 (43) 7 1 (100) 0 0 1
  grade 2 27 (63) 8 (19) 8 (19) 43 20 (36) 20 (36) 15 (27) 55
  grade 3 18 (44) 12 (29) 11 (27) 41 16 (20) 44 (55) 20 (25) 80
  grade 4 1 (17) 2 (33) 3 (50) 6 2 (4) 24 (47) 25 (49) 51
sarcomatoid yes nd nd nd   3 (7) 20 (43) 23 (50) 46
  no nd nd nd   36 (26) 67 (48) 37 (26) 140
  1. nd: not done due to limited tissue material.