C-Reactive Protein as A Fungal Infection Marker in Acute Leukemia Patients

Brigitte Rina Aninda Sidharta, JB. Suparyatmo, Avanti Fitri Astuti


Invasive Fungal Infections (IFIs) can cause serious problems in cancer patients and may result in high morbidity and
mortality. C-reactive protein levels increase in response to injury, infection, and inflammation. C-reactive protein increases
in bacterial infections (mean of 32 mg/L) and in fungal infections (mean of 9 mg/L). This study aimed to determine
C-Reactive Protein (CRP) as a marker of fungal infections in patients with acute leukemia by establishing cut-off values of
CRP. This study was an observational analytical study with a cross-sectional approach and was carried out at the Department
of Clinical Pathology and Microbiology of Dr. Moewardi Hospital in Surakarta from May until August 2019. The inclusion
criteria were patients with acute leukemia who were willing to participate in this study, while exclusion criteria were patients
with liver disease. There were 61 samples consisting of 30 male and 31 female patients with ages ranging from 1 to 70 years.
Fifty-four patients (88.5%) were diagnosed with Acute Lymphoblastic Leukemia (ALL) and 30 (49.18%) were in the
maintenance phase. The risk factors found in those patients were neutropenia 50-1500 μL (23.8%), use of intravenous line
(22%), and corticosteroid therapy for more than one week (20.9%). The median of CRP in the group of patients with positive
culture results was 11.20 mg/L (11.20-26.23 mg/L) and negative culture results in 0.38 mg/L (0.01-18.63 mg/L). The cut-off
value of CRP using the Receiver Operating Curve (ROC) was 9.54 mg/L (area under curve 0.996 and p. 0.026), with a sensitivity
of 100%, specificity of 93.2%, Positive Predictive Value (PPV) of 33.3%, Negative Predictive Value (PPV) of 100%, Positive
Likelihood Ratio (PLR) of 1.08, Negative Likelihood Ratio (NLR) of 0 and accuracy of 93.4%. C-reactive protein can be used as
a screening marker for fungal infections in patients with acute leukemia.


Leukemia, C-reactive protein

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DOI: http://dx.doi.org/10.24293/ijcpml.v27i2.1639


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