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Table 3 Rates of FN by cycle following treatment (FAS—As Randomized)

From: Clinical confirmation to demonstrate similarity for a biosimilar pegfilgrastim: a 3-way randomized equivalence study for a proposed biosimilar pegfilgrastim versus US-licensed and EU-approved reference products in breast cancer patients receiving myelosuppressive chemotherapy

Cycle

Proposed biosimilar pegfilgrastim (APO-Peg)

US-licensed pegfilgrastim reference product (US-Neulasta®)

EU-approved pegfilgrastim reference product (EU-Neulasta®)

Total

Cycle 1

 n/N (%)

15/294 (5.1)

6/148 (4.1)

5/147 (3.4)

26/589 (4.4)

 95% CI

2.9–8.3

1.5–8.6

1.1–7.8

2.9–6.4

Cycle 2

 n/N (%)

0/288 (0.0)

1/146 (0.7)

0/144 (0.0)

1/578 (0.2)

 95% CI

0.0–1.3

0.0–3.8

0.0–2.5

0.0–1.0

Cycle 3

 n/N (%)

0/285 (0.0)

0/146 (0.0)

1/144 (0.7)

1/575 (0.2)

 95% CI

0.0–1.3

0.0–2.5

0.0–3.8

0.0–1.0

Cycle 4

 n/N (%)

0/284 (0.0)

0/144 (0.0)

0/144 (0.0)

0/572 (0.0)

 95% CI

0.0–1.3

0.0–2.5

0.0–2.5

0.0–0.6

Cycle 5

 n/N (%)

2/276 (0.7)

0/143 (0.0)

0/142 (0.0)

2/561 (0.4)

 95% CI

0.1–2.6

0.0–2.5

0.0–2.6

0.0–1.3

Cycle 6

 n/N (%)

0/270 (0.0)

0/143 (0.0)

0/139 (0.0)

0/552 (0.0)

 95% CI

0.0–1.4

0.0–2.5

0.0–2.6

0.0–0.7

Overall

 n/N (%)

17/294 (5.8)

7/148 (4.7)

5/147 (3.4)

29/589 (4.9)

 95% CI

3.4–9.1

1.9–9.5

1.1–7.8

3.3–7.0