Pharmacotherapeutic group: Selective immunosuppressants, ATC code: L04AA61
Mechanism of action
Nerandomilast is a selective inhibitor of phosphodiesterase 4 (PDE4) with at least 9-fold preferential inhibition of the PDE4B isoenzyme over PDE4A, C and D based on in vitro data. PDE4 hydrolyses and inactivates cyclic adenosine monophosphate (cAMP). Nerandomilast exerts both anti-fibrotic and immunomodulatory effects as preferential PDE4B inhibition elevates intracellular cAMP levels and reduces the expression of pro-fibrotic growth factors and inflammatory cytokines, which are overexpressed in fibrotic lung disease.
Pharmacodynamic effects
Anti-fibrotic and immunomodulatory activity
In cellular and animal models, nerandomilast was shown to reduce inflammatory cytokines, influx of neutrophils, extra-cellular matrix components, fibroblast-to-myofibroblast transformation, and fibroblast proliferation (synergistic with nintedanib).
Nerandomilast also showed efficacy in lung fibrosis models in mice and rats.
In clinical studies in healthy volunteers and in IPF patients, nerandomilast inhibited the Lipopolysaccharide-stimulated release of pro-inflammatory cytokines TNFa and IFNg using an ex vivo whole blood assay.
Cardiac electrophysiology
At single doses of nerandomilast up to 48 mg (2.2-times the estimated Cmax,ss exposure at the maximum recommended human dose), clinically significant QTc interval prolongation was not observed.
Clinical efficacy and safety
Idiopathic Pulmonary Fibrosis (IPF)
A randomised, double-blind, placebo-controlled trial (FIBRONEER-IPF) evaluated the clinical efficacy and safety of Jascayd in adult patients with IPF with or without receiving background treatment of nintedanib or pirfenidone. 1177 patients were randomised in a 1:1:1 ratio to receive Jascayd 9 mg twice daily, Jascayd 18 mg twice daily, or placebo twice daily for at least 52 weeks. Randomisation was stratified by the presence of nintedanib or pirfenidone versus the absence of these background treatments at baseline. The primary endpoint of the trial was the absolute change from baseline in Forced Vital Capacity (FVC) in mL at 52 weeks compared with placebo. The key secondary endpoint was the time to the first occurrence of any of the components of the composite endpoint: first acute IPF exacerbation, first hospitalisation for respiratory cause, or death over the duration of the trial. At the time of main analysis, median exposure was 14.6 months; at the end-of trial analysis, median exposure was 17.0 months.
The study population consisted of 83% men and 17% women with a mean age of 70 years (range: 42 to 90 years). 68% of the study population were White, 32% Asian and 0.5% Black/African American. For ethnicity, 8% of patients identified as Hispanic or Latino. At baseline, the mean FVC was 2843 mL and 78% of predicted normal. 78% of the patients were on stable treatment with nintedanib (46%) or with pirfenidone (32%) and 22% were on none of these treatments (15% of patients were treatment naïve and 8% previously discontinued treatment with nintedanib or pirfenidone).
Change from baseline in FVC
Overall, the primary endpoint of absolute change from baseline in FVC (in mL) at 52 weeks in patients receiving Jascayd was statistically significantly improved compared with patients receiving placebo. The adjusted mean decline in patients receiving 18 mg or 9 mg Jascayd twice daily was -115 mL and -139 mL, respectively, whereas in the placebo group, an adjusted mean decline of -183 mL was observed. The respective treatment difference compared with the placebo group was 69 mL (95% CI: 30, 107; p-value: 0.0005) and 45 mL (95% CI: 6, 83; p-value: 0.0222).
The primary analysis was consistent with all sensitivity and supplementary analyses as well as across pre-specified subgroups of age, gender, race, ethnicity, bodyweight, and baseline FVC.
A drug-drug interaction was observed in patients receiving pirfenidone as background IPF treatment (see section 4.5). In these patients, no treatment effect was observed when receiving 9 mg nerandomilast twice daily.
Results for the primary endpoint in the overall population and by background IPF treatment for the Jascayd 18 mg and 9 mg doses versus matching placebo are presented in Figure 1 and Figure 2, respectively.
Figure 1. Absolute change from baseline in FVC (mL) at 52 weeks for patients receiving 18 mg Jascayd compared to placebo in the FIBRONEER-IPF study
For patients who died before week 52, a lowest 10th percentile change from baseline value was assigned.
bid = twice daily
Figure 2. Absolute change from baseline in FVC (mL) at 52 weeks for patients receiving 9 mg Jascayd compared to placebo in the FIBRONEER‑IPF study
For patients who died before week 52, a lowest 10th percentile change from baseline value was assigned.
bid = twice daily
Figure 3 shows the change in FVC from baseline over 52 weeks in patients receiving Jascayd 18 mg twice daily compared to matching placebo. When the adjusted mean of absolute change from baseline in FVC was plotted over time, the curves started to separate at week 2 and continued to diverge up to week 52. This effect over time was consistently observed across the subgroups by background IPF treatment.
Figure 3. Change from baseline in FVC (mL) over 52 weeks in the FIBRONEER‑IPF study
bid = twice daily
Percent change from baseline in FVC
Figure 4 presents the percent change from baseline in FVC in mL at week 52. More patients on Jascayd 18 mg showed stability or improvement in lung function compared to patients receiving placebo. These results were consistent regardless of background IPF treatment.
Figure 4. Histogram of the percent change in FVC (mL) from baseline to week 52 in percent increments or decrements of 5 in the FIBRONEER-IPF studya

a Patients classified as having missing FVC data at week 52 are those with no FVC assessment, including due to death, between day 338 and day 393.
bid = twice daily
Time to first acute ILD exacerbation, first hospitalisation for respiratory cause, or death
The key secondary composite endpoint was the time to the first event of acute IPF exacerbation, hospitalisation for respiratory cause, or death over the duration of the trial. Acute IPF exacerbation was defined as acute worsening or development of dyspnoea typically less than 1 month duration, computed tomography with new bilateral ground-glass opacity and/or consolidation superimposed on a background pattern consistent with IPF, and deterioration not fully explained by cardiac failure or fluid overload. Neither acute IPF exacerbations nor respiratory hospitalisations were adjudicated. Overall, there was no statistically significant treatment difference for the Jascayd 18 mg or 9 mg groups compared to placebo for the key secondary composite endpoint (At time of main analysis for 18 mg and 9 mg dose, respectively: HR 1.17 (95% CI: 0.86, 1.59; p-value: 0.3102) and HR 1.03 (95% CI: 0.75, 1.41; p-value: 0.8568); and at time of end-of trial analysis for 18 mg and 9 mg dose, respectively: HR 0.99 (95% CI: 0.75, 1.31) and HR 0.92 (95% CI: 0.69, 1.22).
See Figure 5 for results of Jascayd 18 mg versus placebo for the key secondary endpoint, its components, and related endpoints 'first acute IPF exacerbation or death' and 'first hospitalisation for respiratory cause or death' over the duration of the FIBRONEER-IPF study at the time of the end-of trial analysis.
Figure 5. Acute IPF exacerbation, hospitalisation for respiratory cause or death over the duration of the FIBRONEER-IPF study
bid = twice daily
Survival
In the pre-specified analysis of survival over the duration of the FIBRONEER-IPF study, the HR for all-cause mortality was 0.95 in the Jascayd 9 mg group compared with matching placebo at the time of end-of trial analysis (95% CI: 0.61, 1.49) see Figure 6; the risk for all-cause mortality was numerically lower by 34% in the Jascayd 18 mg group compared with matching placebo at the time of end-of trial analysis (HR 0.66 (95% CI: 0.41, 1.08)), see Figure 7.
Figure 6. Cumulative incidence of death over the duration of the FIBRONEER-IPF study (nerandomilast 9 mg vs placebo)
Figure 7. Cumulative incidence of death over the duration of the FIBRONEER-IPF study (nerandomilast 18 mg vs placebo)

bid = twice daily
Absolute Decline from Baseline in FVC Percent Predicted >10% or Death
Over the duration of the trial, at the time of end-of trial analysis, the risk of deterioration in absolute FVC % predicted by >10% or death was reduced in patients treated with Jascayd 18 mg versus placebo (30% vs. 39%) (HR 0.75 (95% CI: 0.59, 0.95)).
Progressive Pulmonary Fibrosis (PPF)
A randomised, double-blind, placebo-controlled trial (FIBRONEER-ILD) evaluated the clinical efficacy and safety of Jascayd in adult patients with PPF. Patients with PPF were selected if they had relevant fibrosis (greater than 10% fibrotic features) on high resolution computed tomography (HRCT) and presented with clinical signs of progression (defined as FVC decline greater than or equal to 10%, FVC decline greater than or equal to 5% and less than 10% with worsening of respiratory symptoms or imaging, or worsening of respiratory symptoms and worsening imaging all in the 24 months prior to screening). Patients were required to have an FVC greater than or equal to 45% of predicted and a diffusing capacity of the lungs for carbon monoxide (DLCO) greater than or equal to 25% of predicted normal corrected for haemoglobin (Hb). Eligible patients were or were not on stable background treatment with nintedanib.
1178 patients were randomised in a 1:1:1 ratio to receive Jascayd 9 mg twice daily, Jascayd 18 mg twice daily, or placebo twice daily for at least 52 weeks. Randomisation was stratified by the presence or absence of background treatment with nintedanib and by high resolution computed tomography (HRCT) pattern (UIP or UIP-like fibrotic pattern vs Other fibrotic patterns) using central review. The primary endpoint of the trial was the absolute change from baseline in Forced Vital Capacity (FVC) in mL at 52 weeks compared with placebo. The key secondary endpoint was the time to the first occurrence of any of the components of the composite endpoint: the first acute Interstitial Lung Disease (ILD) exacerbation, first hospitalisation for respiratory cause, or death over the duration of the trial.
At the time of the main analysis, median observation was 15.4 months; at the end-of trial analysis, median observation time was 17.2 months.
The study population consisted of 56% men and 44% women with a mean age of 66 years (range: 26 to 88 years). 58% of the study population were White, 39% Asian and 1% Black or African American. For ethnicity, 14% of patients identified as Hispanic or Latino.
At baseline, the mean FVC was 2353 mL and 70% of predicted normal. 44% of the patients were on stable treatment with nintedanib and 56% not treated with nintedanib (44% of patients were treatment naïve and 12% previously discontinued nintedanib treatment). On baseline HRCT, 71% of the patients had UIP or UIP-like fibrotic pattern and 29% of the patients had other fibrotic patterns. The underlying clinical ILD diagnoses were autoimmune ILDs (28%), hypersensitivity pneumonitis (20%), unclassifiable idiopathic interstitial pneumonia (20%), idiopathic nonspecific interstitial pneumonia (19%), and other ILDs (14%).
Change from baseline in FVC
Overall, the primary endpoint of absolute change from baseline in FVC (in mL) at 52 weeks in patients receiving Jascayd was statistically significantly improved compared with patients receiving placebo.
The adjusted mean decline in patients receiving 18 mg or 9 mg Jascayd twice daily was -99 mL and -85 mL, respectively, whereas in the placebo group, an adjusted mean decline of -166 mL was observed. The respective treatment difference compared with the placebo group was 67 mL (95% CI: 32, 102; p-value: 0.0002) and 81 mL (95% CI: 46, 116; p-value: <0.0001).
The primary analysis was consistent with all sensitivity and supplementary analyses as well as across pre-specified subgroups by presence or absence of nintedanib background treatment, HRCT pattern, and underlying clinical ILD diagnoses. See Figure 7 and Figure 8.
Figure 8. Absolute change from baseline in FVC (mL) at 52 weeks for patients receiving 18 mg Jascayd compared to placebo in the FIBRONEER-ILD study
For patients who died before week 52, a lowest 10th percentile change from baseline value was assigned.
bid = twice daily
Figure 9. Absolute change from baseline in FVC (mL) at 52 weeks for patients receiving 9 mg Jascayd compared to placebo in the FIBRONEER‑ILD study
For patients who died before week 52, a lowest 10th percentile change from baseline value was assigned.
bid = twice daily
The results of the primary endpoint were generally consistent across the other pre-specified subgroups (defined by age, gender, race, ethnicity, bodyweight, baseline FVC).
Figure 10 shows the change in FVC from baseline over 52 weeks in patients receiving Jascayd 18 mg twice daily compared to matching placebo. When the adjusted mean of absolute change from baseline in FVC was plotted over time, the curves started to separate at week 2 and separation was maintained up to week 52. This effect over time was consistently observed regardless of background nintedanib treatment.
Figure 10. Change from baseline in FVC (mL) over 52 weeks in the FIBRONEER-ILD study
bid = twice daily
Percent Change from Baseline in FVC
Figure 11 presents the percent change from baseline in FVC in mL at week 52. More patients on Jascayd 18 mg showed stability or improvement in lung function compared to patients receiving placebo. These results were consistent regardless of background nintedanib treatment.
Figure 11. Histogram of the percent change in FVC (mL) from baseline to week 52 in percent increments or decrements of 5 in the FIBRONEER-ILD studya
a Patients classified as having missing FVC data at week 52 are those with no FVC assessment, including due to death, between day 338 and day 393.
bid = twice daily
Time to first acute ILD exacerbation, first hospitalisation for respiratory cause, or death
The key secondary composite endpoint was the time to the first event of acute ILD exacerbation, hospitalisation for respiratory cause, or death over the duration of the trial. Acute ILD exacerbation was defined as acute worsening or development of dyspnoea typically less than 1 month duration, computed tomography with new bilateral ground-glass opacity and/or consolidation superimposed on a background pattern consistent with fibrosing ILD, and deterioration not fully explained by cardiac failure or fluid overload. Neither acute ILD exacerbations nor respiratory hospitalisations were adjudicated.
At the time of main analysis, the risk for the key secondary endpoint was numerically lower for Jascayd 18 mg or 9 mg groups, respectively, compared to placebo: HR 0.77 (95% CI: 0.59, 1.01; p-value: 0.0602) and HR 0.88 (95% CI: 0.68, 1.14; p-value: 0.3398). The end-of trial analysis resulted in HR 0.77 (95% CI: 0.60, 0.99) and HR 0.78 (95% CI: 0.61, 1.00) for the 18 mg and 9 mg dose, respectively.
See Figure 12 for results of Jascayd 18 mg versus placebo for the key secondary endpoint, its components, and related endpoints 'first acute ILD exacerbation or death' and 'first hospitalisation for respiratory cause or death' over the duration of the FIBRONEER-ILD study at the time of the end-of trial analysis.
Figure 12. Acute ILD exacerbation, hospitalisation for respiratory cause or death over the duration of the FIBRONEER-ILD study
bid = twice daily
The results of the key secondary endpoint were generally consistent regardless of background nintedanib treatment or HRCT pattern and across the other pre-specified subgroups (defined by age, gender, race, ethnicity, bodyweight, baseline FVC).
Survival
In the pre-specified analysis of survival over the duration of the FIBRONEER-ILD study, the risk for all-cause mortality was 49% lower in the Jascayd (either 18 mg or 9 mg) group compared with matching placebo at the end-of trial analysis (HR 0.51 (95% CI: 0.34, 0.78), see Figure 12 and Figure 13. Across treatment groups, the majority of deaths (64%) were adjudicated as respiratory related (86 of 134 deaths, 64%).
In a post hoc analysis, the risk for adjudicated respiratory-related mortality was 62% lower in the Jascayd 9 mg group compared with matching placebo (HR 0.38 (95% CI: 0.22, 0.65) and the risk for adjudicated respiratory-related mortality was 57% lower in the Jascayd 18 mg group compared with matching placebo (HR 0.43 (95% CI: 0.25, 0.72).
Figure 13. Cumulative incidence of death over the duration of the FIBRONEER-ILD study (nerandomilast 9 mg vs placebo)
Figure 14. Cumulative incidence of death over the duration of the FIBRONEER-ILD study (nerandomilast 18 mg vs placebo)
bid = twice daily
Absolute Decline from Baseline in FVC Percent Predicted >10% or Death
Over the duration of the trial, at the time of end-of trial analysis, the risk of deterioration in absolute FVC % predicted by >10% or death was reduced in patients treated with Jascayd 18 mg versus placebo (32% vs 43%) (HR 0.71 (95% CI: 0.56, 0.89)).
Pooled analysis for IPF and PPF
Survival
In the prespecified pooled analysis of survival in patients with IPF and PPF from the FIBRONEER-IPF and FIBRONEER-ILD trials, the risk for all-cause mortality over the duration of the trial was reduced by 43% in the Jascayd 18 mg group compared with matching placebo at the time of end-of trial analysis (HR 0.57 (95% CI: 0.41, 0.78)). Across treatment groups, the majority of deaths were adjudicated as respiratory related (150 of 237 adjudicated deaths, 63%) were respiratory-related.