A compound of formula or a pharmaceutically acceptable salt thereof, wherein: (i) X is C-R 3; m is 0 or 1; n is selected from 0, 1 and 2; and L is selected from - (CH 2) p -, -O-, -OCH 2 -, -CH 2 OCH 2 -, -CF 2 CH 2 -, -CH=CH-, -(CR 16 R 17) q -CH 2 O-, and -CH 2 CF 2 -; or (ii) X is N; m is 1; n is 1 or 2; and L is -(CH 2) p - or -CF 2 CH 2 -; p is selected from 1, 2 and 3; q is 0 or 1; A is selected from: (i) C 6 -C 14 -aryl substituted with R 4, R 5 and R 6; (ii) 5- to 14-membered heteroaryl substituted with R 7, R 8 and R 9; and (iii) 3- to 14-membered heterocycloalkyl substituted with R 10, R 11 and R 12; R 1 is hydrogen or C 1-6 -alkyl; R 2 is selected from hydrogen, C 1-6 -alkyl and hydroxy-C 1-6 -alkyl; R 3 is selected from hydrogen, halogen, hydroxy, C 1-6 -alkoxy, C 1-6 -alkyl and halo-C 1-6 -alkyl; each of R 4, R 5, R 6, R 7, R 8, R 9, R 10, R 11 and R 12 is independently selected from hydrogen, halogen, cyano, hydroxy, C 1-6 -alkyl, halo-C 1-6 -alkyl, hydroxy-C 1-6 -alkyl, C 1-6 -alkanoyl, halo-C 1-5 -alkyl-CH -, C 1-6 -alkoxy, halo-C 1-6 -alkoxy, SF 5, CH 3 SO 2, C 3-10 -cycloalkyl, C 3-10 -cycloalkyl substituted with R 13, 3- to 14-membered heterocycloalkyl, 3- to 14-membered heterocycloalkyl substituted with R 14 and R 15, 5- to 14-membered heteroaryl, C6-C14-aryl, Ce-C 14-aryloxy, halo-C 6 -C 14 -aryl, and halo-C 6 -C 14 -aryloxy; each of R 13, R 14, and R 15 is independently selected from C 1-6 -alkyl, C 1-6 -alkoxy, halo-C 1-6 -alkyl, halo-C 1-6 -alkoxy, halogen, and hydroxy; and R 16 and R 17, taken together with the carbon atom to which they are attached, form a C 3-10 -cycloalkyl. (i) X is C-R 3; m is 0 or 1; n is selected from 0, 1 and 2; and L is selected from - (CH 2) p -, -O-, -OCH 2 -, -CH 2 OCH 2 -, -CF 2 CH 2 -, -CH=CH-, -(CR 16 R 17) q -CH 2 O-, and -CH 2 CF 2 -; or (ii) X is N; m is 1; n is 1 or 2; and L is -(CH 2) p - or -CF 2 CH 2 -; p is selected from 1, 2 and 3; q is 0 or 1; A is selected from: (i) C 6 -C 14 -aryl substituted with R 4, R 5 and R 6; (ii) 5- to 14-membered heteroaryl substituted with R 7, R 8 and R 9; and (iii) 3- to 14-membered heterocycloalkyl substituted with R 10, R 11 and R 12; (i) C 6 -C 14 -aryl substituted with R 4, R 5 and R 6; (ii) 5- to 14-membered heteroaryl substituted with R 7, R 8 and R 9; and (iii) 3- to 14-membered heterocycloalkyl substituted with R 10, R 11 and R 12; R 1 is hydrogen or C 1-6 -alkyl; R 2 is selected from hydrogen, C 1-6 -alkyl and hydroxy-C 1-6 -alkyl; R 3 is selected from hydrogen, halogen, hydroxy, C 1-6 -alkoxy, C 1-6 -alkyl and halo-C 1-6 -alkyl; each of R 4, R 5, R 6, R 7, R 8, R 9, R 10, R 11 and R 12 is independently selected from hydrogen, halogen, cyano, hydroxy, C 1-6 -alkyl, halo-C 1-6 -alkyl, hydroxy-C 1-6 -alkyl, C 1-6 -alkanoyl, halo-C 1-5 -alkyl-CH -, C 1-6 -alkoxy, halo-C 1-6 -alkoxy, SF 5, CH 3 SO 2, C 3-10 -cycloalkyl, C 3-10 -cycloalkyl substituted with R 13, 3- to 14-membered heterocycloalkyl, 3- to 14-membered heterocycloalkyl substituted with R 14 and R 15, 5- to 14-membered heteroaryl, C6-C14-aryl, Ce-C 14-aryloxy, halo-C 6 -C 14 -aryl, and halo-C 6 -C 14 -aryloxy; each of R 13, R 14, and R 15 is independently selected from C 1-6 -alkyl, C 1-6 -alkoxy, halo-C 1-6 -alkyl, halo-C 1-6 -alkoxy, halogen, and hydroxy; and R 16 and R 17, taken together with the carbon atom to which they are attached, form a C 3-10 -cycloalkyl.