Analytical methods | |||
---|---|---|---|
Comparative study | #1 | #2 | |
Chromatography | LC | LC | |
Ion source | ESI | ESI | |
Positive/Negative mode | positive | positive | |
Mass analyzer | QTrap | QTrap | |
Identification level | MS/MS | MS/MS |
Sample information | |||
---|---|---|---|
Comparative study | #1 | #2 | |
Country | China | China | |
Specimen | dried blood spot | dried blood spot | |
Marker function | diagnosis | diagnosis | |
Participants(Case) | Cancer type | lung cancer | benign lung disease |
Stage | – | – | |
Number | 222 | 118 | |
Gender (M,F) | 94, 128 | 55, 63 | |
Mean age (range) (M,F) | median: 57.47 (27-81) | median: 59.61 (32-80) | |
Smoking status | – | – | |
Participants(Control) | Type | healthy | healthy |
Number | 96.0 | 96.0 | |
Gender (M,F) | 30, 66 | 30, 66 | |
Mean age (range) (M,F) | median: 56.07 (32-80) | median: 56.07 (32-80) | |
Smoking status | – | – |
Data processing and metabolite identification | |
---|---|
Data processing software | Analyst software, ChemoView software |
Database search | – |
Statistics and concentration information | |
---|---|
Differential analysis method | PLS-DA, ANOVA, student’s t-test |
Classification method | – |
Survival analysis method | – |
Metabolite | Comparative study | Author-emphasized biomarkers | Mean concentration (case) | Mean concentration (control) | Fold change (case/control) | P-value | FDR | VIP |
---|---|---|---|---|---|---|---|---|
Arg | – | V | – | – | – | <0.001 | – | – |
Arg | – | V | – | – | – | <0.001 | – | – |
C10:1 | – | V | – | – | – | <0.001 | – | – |
C12 | – | – | – | – | – | <0.001 | – | – |
C14 | – | – | – | – | – | <0.001 | – | – |
C14:1 | – | – | – | – | – | <0.001 | – | – |
C5DC | – | – | – | – | – | <0.001 | – | – |
C5-OH/C0 | – | V | – | – | – | <0.001 | – | – |
Pro | – | V | – | – | – | <0.001 | – | – |
C12 | – | – | – | – | – | 0.042 | – | – |
Pro | – | V | – | – | – | 0.042 | – | – |
C14:1 | – | – | – | – | – | 0.032 | – | – |
C10:1 | – | V | – | – | – | 0.03 | – | – |
C14 | – | – | – | – | – | 0.023 | – | – |
Pip | – | – | – | – | – | 0.023 | – | – |
C5DC | – | – | – | – | – | 0.02 | – | – |
Hcy | – | – | – | – | – | 0.009 | – | – |
C5-OH/C0 | – | V | – | – | – | 0.005 | – | – |
Pip | – | – | – | – | – | 0.003 | – | – |
Hcy | – | – | – | – | – | 0.002 | – | – |
Metabolite | Comparative study | Author-emphasized biomarkers | Cutoff value | AUROC (95%CI) | Sensitivity (%) | Specificity (%) | Accuracy (%) |
---|---|---|---|---|---|---|---|
Arg | – | V | – | – | – | – | – |
Arg | – | V | – | – | – | – | – |
C10:1 | – | V | – | – | – | – | – |
C12 | – | – | – | – | – | – | – |
C14 | – | – | – | – | – | – | – |
C14:1 | – | – | – | – | – | – | – |
C5DC | – | – | – | – | – | – | – |
C5-OH/C0 | – | V | – | – | – | – | – |
Pro | – | V | – | – | – | – | – |
C12 | – | – | – | – | – | – | – |
Pro | – | V | – | – | – | – | – |
C14:1 | – | – | – | – | – | – | – |
C10:1 | – | V | – | – | – | – | – |
C14 | – | – | – | – | – | – | – |
Pip | – | – | – | – | – | – | – |
C5DC | – | – | – | – | – | – | – |
Hcy | – | – | – | – | – | – | – |
C5-OH/C0 | – | V | – | – | – | – | – |
Pip | – | – | – | – | – | – | – |
Hcy | – | – | – | – | – | – | – |