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Letter to the Editor

Effects of pirfenidone on renal function in patients with interstitial pneumonia

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Figures & data

Table 1. Baseline characteristics of included patients.

Figure 1. Comparison of ΔeGFR [0 to 6] and ΔeGFR [6 to 12] with ΔeGFR [−6 to 0] in patients with eGFR <75 mL/min/1.73m2.The values of ΔeGFR [−6 to 0], ΔeGFR [0 to 6], and ΔeGFR [6 to 12] were −1.0, +1.8, and 0.0, respectively. Pirfenidone significantly suppressed renal function decline for up to 6 months after starting treatment (p = .010).

Figure 1. Comparison of ΔeGFR [0 to 6] and ΔeGFR [6 to 12] with ΔeGFR [−6 to 0] in patients with eGFR <75 mL/min/1.73m2.The values of ΔeGFR [−6 to 0], ΔeGFR [0 to 6], and ΔeGFR [6 to 12] were −1.0, +1.8, and 0.0, respectively. Pirfenidone significantly suppressed renal function decline for up to 6 months after starting treatment (p = .010).

Figure 2. Comparison of ΔeGFR [0 to 6] and ΔeGFR [6 to 12] with ΔeGFR [−6 to 0] in patients with eGFR <60 mL/min/1.73m2.The values of ΔeGFR [−6 to 0], ΔeGFR [0 to 6], and ΔeGFR [6 to 12] were −2.5, +1.6, and −0.7, respectively. Compared to baseline values, pirfenidone significantly suppressed the renal function decline up to 6 months after starting treatment (p < .001), additionally showing tendency to suppress renal function even at 12 months after treatment (p = .136).

Figure 2. Comparison of ΔeGFR [0 to 6] and ΔeGFR [6 to 12] with ΔeGFR [−6 to 0] in patients with eGFR <60 mL/min/1.73m2.The values of ΔeGFR [−6 to 0], ΔeGFR [0 to 6], and ΔeGFR [6 to 12] were −2.5, +1.6, and −0.7, respectively. Compared to baseline values, pirfenidone significantly suppressed the renal function decline up to 6 months after starting treatment (p < .001), additionally showing tendency to suppress renal function even at 12 months after treatment (p = .136).