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Table 1 Demographics and baseline characteristics for patients receiving palbociclib plus endocrine therapy with/without dose reduction

From: Hematologic adverse events following palbociclib dose reduction in patients with hormone receptor–positive/human epidermal growth factor receptor 2–negative advanced breast cancer: pooled analysis from randomized phase 2 and 3 studies

Characteristic

Palbociclib plus endocrine therapy*

Patients with dose reduction, 125 to 100 mg (N = 311)

Patients without dose reduction (N = 550)

Pooled ITT population (N = 875)

Age, years

 Mean (range)

59.9 (32–88)

60.0 (30–89)

59.9 (30–89)

 < 65, n (%)

192 (61.7)

366 (66.5)

571 (65.3)

 ≥ 65, n (%)

119 (38.3)

184 (33.5)

304 (34.7)

Race, n (%)

 White

211 (67.8)

451 (82.0)

672 (76.8)

 Black

7 (2.3)

14 (2.5)

21 (2.4)

 Asian

77 (24.8)

64 (11.6)

145 (16.6)

 Other

16 (5.1)

21 (3.8)

37 (4.2)

Weight, mean (range), kg

67.9 (33.0–123.0)

72.4 (39.7–156.8)

70.6 (33.0–156.8)

Height, mean (range), cm

159.7 (134.6–182.9)

161.3 (138.0–187.0)

160.7 (134.6–187.0)

Measurable disease, n (%)

225 (72.3)

435 (79.1)

671 (76.7)

Prior chemotherapy for advanced/metastatic disease, n (%)

32 (10.3)

68 (12.4)

113 (12.9)

Disease site, n (%)

 Visceral

146 (46.9)

299 (54.4)

452 (51.7)

 Nonvisceral

165 (53.1)

251 (45.6)

423 (48.3)

 Bone only

84 (27.0)

117 (21.3)

206 (23.5)

Number of disease sites involved, n (%)

 1

103 (33.1)

167 (30.4)

272 (31.1)

 2

86 (27.7)

141 (25.6)

231 (26.4)

 3

69 (22.2)

131 (23.8)

203 (23.2)

 4

37 (11.9)

68 (12.4)

106 (12.1)

 5

16 (5.1)

29 (5.3)

47 (5.4)

Disease stage at initial diagnosis,ǁn (%)

 I

28 (9.0)

47 (8.5)

77 (8.8)

 II

99 (31.8)

152 (27.6)

257 (29.4)

 III

45 (14.5)

95 (17.3)

141 (16.1)

 IV

75 (24.1)

148 (26.9)

224 (25.6)

 Other

8 (2.6)

13 (2.4)

21 (2.4)

 Unknown/missing

23 (7.4)

46 (8.4)

71 (8.1)

 Not collected

33 (10.6)

49 (8.9)

84 (9.6)

  1. ITT intent-to-treat
  2. *Patients in PALOMA-1 and PALOMA-2 received palbociclib plus letrozole; patients in PALOMA-3 had endocrine-resistant metastatic breast cancer and received palbociclib plus fulvestrant
  3. Data from patients who started on a dose < 125 mg are not included in the table
  4. Not reported/missing patients
  5. ǁStage at initial diagnosis was not collected for PALOMA-1