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08 May 2023: Articles

Anti-PL12 Anti-Synthetase Syndrome and Amyotrophic Lateral Sclerosis: A Case Report of a Rare Comorbidity

Rare coexistence of disease or pathology

Ejaz A. Shamim A* , Melvin W. Kong B , Ivan Y. Lim B , Richard J. McCarthy B , Sharday N. Grant B , Harpreet K. Nagi B

DOI: 10.12659/AJCR.939035

Am J Case Rep 2023; 24:e939035

Table 1. Summary of the clinical serological test results.

Type of testing performed (normal reference)Results range (N=number of repeat tests)Results average
Creatine Kinase (39–308 U/L)298–1292 (N=26)696.3
Aldolase (≤8.1 U/L)15.3–22.1 (N =2)22.1
ESR (0–20 mm/hr)16–33 (N=4)27.75
CRP (≤5 mg/L)1.5–10.9 (N=16)3.8625
ANA (negative)Positive, Negative, Negative (N=3)
RF (7–8 (N=1)7.5
CCP (≤4.9 U/mL)2.9–7.5 (N=3)5.4
DNA DS AB (≤4 IU/mL)1 (N=3)1
Smith antibody (
Smith ab+RNP IGG (
SS-A antibody (≤1.0 IU/mL)>8 (N=3)>8
SS-B antibody (≤1.0 IU/mL)
SCL-70 antibody (
IgG (700–1600 mg/dL)1106 (N=1)1106
IgM (40–230 mg/dL)87 (N=1)87
IgA (70–400 mg/dL)148 (N=1)148
PL-7 Autoantibodies (not detected)Not detected (N=2)Not detected
PL-12 Autoantibodies (not detected)Detected (N=2)Detected
Mi-2 Autoantibodies (not detected)Not detected (N=2)Not detected
Ku Autoantibodies (not detected)Not detected (N=2)Not detected
EJ Autoantibodies (not detected)Not detected (N=2)Not detected
OJ Autoantibodies (not detected)Not detected (N=2)Not detected
SRP Autoantibodies (not detected)Not detected (N=2)Not detected
Jo-1 Antibody (< 1.0 negative)

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American Journal of Case Reports eISSN: 1941-5923
American Journal of Case Reports eISSN: 1941-5923