Table 3: Comparisons of clinical findings in anti-MCV-positive and anti-MCV-negative PsA patients.

VariableAnti-MCV-positive PsA patients (N = 11)Anti-MCV-negative PsA patients (N = 35)

Sex ratio (male : female)3 : 821 : 14
Age (mean ± SD; years)57.91 ± 9.2653.23 ± 12.48
Current smoker (%)923
Age at diagnosis of PsO (mean ± SD; years)44.27 ± 13.7337.23 ± 14.48
Age at diagnosis of PsA (mean ± SD; years)46.55 ± 15.7844.86 ± 13.34
PsA severity (mild : moderate to severe)0 : 110 : 35
Psoriasis guttata (%)93
Arthritis mutilans90
Axial type (%)2714
Distal type (%)93
Asymmetrical oligoarthritis (%)6451
Symmetrical polyarthritis (%)3646
Therapy
 Received local steroid
 treatment (%)
7383
 Received sulfasalazine (%)2720
 Received systemic steroid
 treatment (%)
279
 Received 311 nm NB-UVB
 therapy (%)
183
 Received PUVA therapy (%)03
 Received MTX therapy (%)7389
 Received biological therapy
  (%)
1811
 DIP involvement (%)1837
 Erosion (%)1826
Level of anti-MCV (mean ± SD; U/mL)102.41 ± 150.99 7.67 ± 3.77 *
ANA positivity (%)5033
RF positivity (%)014
DAS28 score (mean ± SD)4.49 ± 0.984.52 ± 1.02
Psoriatic skin lesions
Nail psoriasis (%)64 17 *
 Scalp psoriasis (%)6474
 Plaques on the face (%)911
 Plaques on the upper limbs
  (%)
5563
 Plaques on the trunk (%)3629
 Plaques on the perineum (%)917
 Plaques on the lower limbs
 (%)
5560
Arthritic features
 Tender joint count (mean ±
 SD)
7.27 ± 3.5810.57 ± 6.29
  Back (%)3651
  Shoulders (%)3637
  Elbows (%)1814
  Wrists (%)4546
  Hands (%)4574
  Hips (%)023
 Knees (%)64 26 *
  Feet (%)7357
 Swollen joint count (mean ±
 SD)
3.45 ± 2.942.43 ± 3.27
  Swollen shoulder (%)00
  Swollen elbow (%)90
  Swollen wrist (%)186
  Hand joints (%)4540
  Swollen knee (%)276
  Feet joints (%)1829

PsO: psoriasis vulgaris, PsA: psoriatic arthritis, anti-MCVs: antibodies against mutated citrullinated vimentin, BMI: body mass index, PASI: psoriasis area and severity index, DAS28: disease activity score, DIP: distal interphalangeal, HLA B27: human leukocyte antigen B27, ANA: anti-nuclear antibodies, RF: rheumatoid factor, ESR: erythrocyte sedimentation rate, CRP: C-reactive protein, MTX: methotrexate, PUVA: psoralen + ultraviolet A, nm: nanometer. Symmetrical arthritis: bilateral arthritis with a frequency of >50%. The current values in these cases related to at least in 60%. For the other values, the data were complete: 100%. *There were significant differences between the anti-MCV-positive and negative groups ( < 0.05).