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. 2023 Jul 24;25:127. doi: 10.1186/s13075-023-03100-z

Table 1.

Comparison of demographics, clinical and laboratory data, primary pulmonary function parameters, and ILD subtypes in patients with MDA5+DM between the survival and non-survival groups

Non-survival group (N = 32) Survival group (N = 94) P-value
Female, no. (%) 14 (43.8) 64 (68.1) 0.014
Age at onset, years, median [IQR] 59 [55, 56] 48 [39, 57] < 0.001
Diagnosis time, months, median [IQR] 1.0 [1.0, 3.0] 2.0 [1.0, 5.0] 0.036
Survival time, months, median [IQR] 3.6 [1.7, 7.2] 30.3 [15.0, 46.3] < 0.001
Cause of death, no. (%)
 Respiratory failure 30 (93.8)
 Gastrointestinal hemorrhage 1 (3.1)
 Unknown 1 (3.1)
Laboratory data, median [IQR]
 ALT, U/L 71 [30, 133] 44 [24, 88] 0.069
 AST, U/L 76 [48, 153] 46 [29, 87] 0.008
 LDH, U/L 372 [284, 478] 301 [237, 368] 0.008
 CK, U/L 85 [43, 276] 60 [36, 103] 0.079
 Creatinine, μmol/L 56 [41, 60] 51 [41, 60] 0.385
 Ferritin, ng/mL 1301 [523, 1500] 532 [241, 1215] 0.003
 CRP, mg/L 14 [6, 25] 6 [3, 14] 0.002
 ESR, mm/h 38 [28, 69] 28 [19, 47] 0.011
 Total lymphocyte count, /µL 605 [390, 785] 745 [500, 1198] 0.030
 CD3+T lymphocyte count, /µL 362 [254, 527] 454 [292, 759] 0.025
 CD4+T lymphocyte count, /µL 249 [118, 385] 249 [162, 444] 0.241
 CD8+T lymphocyte count, /µL 119 [66, 150] 145 [83, 253] 0.029
Clinical characteristics, no. (%)
 Myodynia 10 (31.3) 27 (28.7) 0.786
 Muscle weakness 9 (28.1) 26 (27.7) 0.960
 Heliotropic rash 19 (59.4) 57 (60.6) 0.900
 V sign 12 (37.5) 42 (44.7) 0.478
 Shawl sign 9 (28.1) 23 (24.5) 0.681
 Gottron’s sign 25 (78.1) 75 (79.8) 0.841
 Skin ulcer 5 (15.6) 9 (9.6) 0.347
 Mechanics hand 10 (31.3) 33 (35.1) 0.691
 Periungual erythema 8 (25.0) 23 (24.5) 0.952
 Dysphagia 3 (9.4) 7 (7.4) 1.000
 Malignancy 3 (9.4) 3 (9.4) 0.348
 Overlap CTDs 0 (0) 7 (7.4) 0.190
Pulmonary function
 FVC, % pred, mean ± SD 66 ± 21a 75 ± 19b 0.091
 FEV1, % pred, mean ± SD 66 ± 19a 74 ± 18b 0.093
 DLco, % pred, mean ± SD 49 ± 33c 56 ± 17d 0.489
 TLC, % pred, median [IQR] 67 [56, 78]c 75 [64, 86]d 0.213
ILD subtypes, no. (%)
 RP-ILD 29 (90.6) 9 (9.6) < 0.001
 C-ILD 2 (6.3) 79 (84.0) < 0.001
 Non-ILD 1 (3.2) 6 (6.4) 0.804

Bold text highlights the significance

MDA5+DM Anti-MDA5 dermatomyositis, ALT Alanine transaminase, AST Aspartate transaminase, LDH Lactate dehydrogenase, CK Creatine kinase, CRP C-reactive protein, ESR Erythrocyte sedimentation rate, CTDs Connective tissue diseases, FVC forced vital capacity, FEV1 Forced expiratory volume in 1 s, Dlco, diffusing capacity of the lungs for carbon monoxide, TLC Total lung capacity, % pred Percent predicted values, RP-ILD Rapidly progressive interstitial lung disease, C-ILD Chronic interstitial lung disease

aData available for 17 patients

bData available for 62 patients

cData available for 14 patients

dData available for 61 patients