Polymorphs of N-[(3-fluoro-4-methoxypyridin-2-yl)methyl]-3-(methoxymethyl)-1-({4-[(2-oxopyridin-1-yl)methyl]phenyl}methyl)pyrazole-4-carboxamide and salts thereof

1. A method of treating a disease or condition mediated by plasma kallikrein in a mammal in need of such treatment, said method comprising administering to the mammal a therapeutically effective amount of a crystalline form of N-[(3-fluoro-4-methoxypyridin-2-yl)methyl]-3-(methoxymethyl)-1-({4-[(2-oxopyridin-1-yl)methyl]phenyl}methyl)pyrazole-4-carboxamide, wherein the N-[(3-fluoro-4-methoxypyridin-2-yl)methyl]-3-(methoxymethyl)-1-({4-[(2-oxopyridin-1-yl)methyl]phenyl}methyl)pyrazole-4-carboxamide is crystalline form 1 of N-[(3-fluoro-4-methoxypyridin-2-yl)methyl]-3-(methoxymethyl)-1-({4-[(2-oxopyridin-1-yl)methyl]phenyl}methyl)pyrazole-4-carboxamide, which exhibits at least X-ray powder diffraction peaks (Cu Kα radiation, expressed in degrees 2θ) at 11.2±0.3, 12.5±0.3, 13.2±0.3, 14.5±0.3, and 16.3±0.3 and/or exhibits an endothermic peak in its DSC thermograph at 151±3° C.

2. The method of claim 1 , wherein the disease or condition mediated by plasma kallikrein is impaired visual acuity, diabetic retinopathy, retinal vascular permeability associated with diabetic retinopathy, diabetic macular edema, hereditary angioedema, diabetes, pancreatitis, cerebral haemorrhage, nephropathy, cardiomyopathy, neuropathy, inflammatory bowel disease, arthritis, inflammation, septic shock, hypotension, cancer, adult respiratory distress syndrome, disseminated intravascular coagulation, blood coagulation during cardiopulmonary bypass surgery, or bleeding from post-operative surgery.

3. The method of claim 1 , wherein the disease or condition mediated by plasma kallikrein is retinal vascular permeability associated with diabetic retinopathy, diabetic macular edema, or hereditary angioedema.

4. The method of claim 1 , wherein the disease or condition mediated by plasma kallikrein is retinal vascular permeability associated with diabetic retinopathy, or diabetic macular edema.

5. The method of claim 1 , wherein the disease or condition mediated by plasma kallikrein is hereditary angioedema.

6. The method of claim 1 , wherein the disease or condition mediated by plasma kallikrein is diabetic macular edema.

7. The method of claim 1 , wherein the disease or condition mediated by plasma kallikrein is retinal vein occlusion.

8. The method of claim 1 , wherein the N-[(3-fluoro-4-methoxypyridin-2-yl)methyl]-3-(methoxymethyl)-1-({4-[(2-oxopyridin-1-yl)methyl]phenyl}methyl)pyrazole-4-carboxamide is administered in a form suitable for injection into the ocular region of a patient.

9. The method of claim 8 , wherein the N-[(3-fluoro-4-methoxypyridin-2-yl)methyl]-3-(methoxymethyl)-1-({4-[(2-oxopyridin-1-yl)methyl]phenyl}methyl)pyrazole-4-carboxamide is administered in a form suitable for intravitreal injection.

10. The method of claim 1 , wherein the N-[(3-fluoro-4-methoxypyridin-2-yl)methyl]-3-(methoxymethyl)-1-({4-[(2-oxopyridin-1-yl)methyl]phenyl}methyl)pyrazole-4-carboxamide has an X-ray powder diffraction pattern that is substantially the same as that shown in FIG. 2 a.

11. The method of claim 1 , wherein the N-[(3-fluoro-4-methoxypyridin-2-yl)methyl]-3-(methoxymethyl)-1-({4-[(2-oxopyridin-1-yl)methyl]phenyl}methyl)pyrazole-4-carboxamide exhibits an endothermic peak in its DSC thermograph at 151±3° C.

12. The method of claim 1 , wherein the N-[(3-fluoro-4-methoxypyridin-2-yl)methyl]-3-(methoxymethyl)-1-({4-[(2-oxopyridin-1-yl)methyl]phenyl}methyl)pyrazole-4-carboxamide has a DSC thermograph substantially the same as that shown in FIG. 4 .

13. The method of claim 1 , wherein the N-[(3-fluoro-4-methoxypyridin-2-yl)methyl]-3-(methoxymethyl)-1-({4-[(2-oxopyridin-1-yl)methyl]phenyl}methyl)pyrazole-4-carboxamide which exhibits at least X-ray powder diffraction peaks (Cu Kα radiation, expressed in degrees 2θ) at 11.2±0.3, 12.5±0.3, 13.2±0.3, 14.5±0.3, and 16.3±0.3.