Review Article

Biomarkers of Community-Acquired Pneumonia: A Key to Disease Diagnosis and Management

Table 2

Biomarker combinations and signatures for CAP aetiologies.

Study [Ref.]Study designPatientsCAP aetiologiesProtein combination and signature

Engelmann et al., 2015
[36]
prospective multicenter cohort study553 childrenviral infections (n = 133)
bacterial infections (n = 48)
uninfected controls (n = 133)
MxA + CRP

Sambursky et al., 2015
[37]
prospective, single center, blinded, observational clinical trial54 adultsviral infections:
influenza A, influenza B, parainfluenza 2, parainfluenza 3
(n = 10)
bacterial infections (n = 20)
uninfected controls (n = 24)
MxA + CRP

Zhu et al., 2015
[38]
prospective cohort study96 childrenviral infections:
Influenza virus,
RSV,
Human bocavirus,
Parainfluenza virus,
Adenovirus,
Coronavirus,
Influenza virus + RSV
(n = 51)
bacterial infections (n = 45)
CRP + CD35 + CD64,
CRP + CD35,
CRP + CD64

Valim et al., 2016
[39]
prospective cohort study80 childrenvirus (n = 30)
the most common pathogen were rhinovirus,
RSV, and adenovirus
malaria (n = 27)
bacteria (n = 23)
haptoglobin +TNFR-2+ TIMP-1,
haptoglobin + IL-10+ TIMP-1,
haptoglobin + IL-10, CK-MB

Oved et al, 2015
[41]
prospective cohort study
Curiosity
765 children and adultsTraining set:
viral infections:
(n = 167),
the most common pathogen were
Rhinovirus,
Adenovirus,
Parainfluenza,
Influenza A,
and RSV
bacterial infections (n = 160)
uninfected controls (n = 56)
Validation set:
viral infections:
(n = 167),
the most common pathogen were
Rhinovirus,
Adenovirus,
Parainfluenza,
Influenza A,
and RSV
bacterial infections (n = 159)
uninfected controls (n = 56)
CRP + TRAIL + IP-10

Eden et al., 2016
[42]
sub-study of prospective cohort study Curiosity155
children and adults
viral infections:
(n = 128)
bacterial or mixed infections (n = 27)
CRP + TRAIL + IP-10

Srugo et al., 2017
[43]
prospective double-blind, multicenter study361
children
unknown
(n = 54)
viral infections:
(n = 239)
bacterial infections (n = 68)
CRP + TRAIL + IP-10

van Houten et al., 2017
[44]
prospective, double-blind, international, multicentre study OPPORTUNITY577 childrenunknown
(n = 71)
viral infections:
(n = 435)),
the most common pathogen were
Rhinovirus and RSV
bacterial infections (n = 71)
CRP + TRAIL + IP-10

Ashkenazi-Hoffnung et al., 2018
[45]
sub-study of prospective cohort study Curiosity314
children and adults
viral infections:
(n = 175)
bacterial infections (n = 139)
CRP + TRAIL + IP-10