Table 7 Published studies on VOCs on breast cancer.

From: A prediction model using 2-propanol and 2-butanone in urine distinguishes breast cancer

Authors

Sample

Methods, results

Phillips et al. (2003)25

Breath

GCMS, methylated alkane contour

BC (51) vs abnormal MG (50)

Sensitivity 62.7%(32/51), specificity 84.0% (42/50)

BC (51) vs healthy (42)

Sensitivity 94.1% (48/51), specificity 73.8% (31/42)

Phillips et al. (2006)22

Breath (re-analysis of ref.#24)

GCMS

BC (51) vs abnormal MG (50)

2-propanol, 2,3-dihydro-1-phenyl-4(1H)-quinazolinone,

BC (51) vs healthy (42)

1-phenyl-ethanone, heptanal, and isopropyl myristate

 

Sensitivity 93.8%, specificity 84.6%

Phillips et al. (2010)24

Breath

GCMS

BC (54) vs healthy (204)

Training set: Sensitivity 78.5%, specificity 88.3%

 

Test set: sensitivity 75.3%, specificity 84.8%

Patterson et al. (2011)48

Breath

GCMS

BC (20) vs healthy (20)

Sensitivity 72%, specificity 64%

Silva et al. (2012)36

Urine

GCMS

BC (26) vs healthy (21)

↓dimethyl disulfide

 

↑4-carene, 3-heptanone, phenol,

 

1,2,4-trimethylbenzene, 2-methoxythiophene,

 

Sensitivity/Specificity NA

Mangler et al. (2012)26

Breath

GCMS

BC (10) vs healthy (10)

↓3-methylhexane, decene, caryophyllene, naphthalene

 

↑trichlorethylene

 

Sensitivity/Specificity NA

Li et al. (2014)46

Breath

GCMS

BC (22) vs healthy (24)

Hexanal, heptanal, octanal,

vs Breast benign tumor (17)

and nonanal,

 

Sensitivity 72.7%, specificity 91.7%

Wang et al. (2014)47

Breath

GCMS

BC (39) vs healthy (45)

2,5,6-trimethyloctane,

vs cyclomastopathy (25)

1,4-dimethoxy-2,3-butanediol, cyclohexanone

vs mammary gland fibroma (21)

Sensitivity/specificity NA

Barash et al. (2015)20

Breath

GCMS

BC (90) vs benign (13) vs healthy (23)

23 compounds

 

Sensitivities 81–88%, specificities 76–96%

Silva et al. (2017)49

BC cell lines

GCMS

 

2-Pentanone, 2-heptanone, 3-methyl-3-buten-1-ol,

 

ethyl acetate,

 

ethyl propanoate and 2-methyl butanoate

 

Sensitivity/Specificity NA

Phillips et al. (2017)19

Breath

GCMS

BC (54) vs healthy (214)

21 compounds,

 

Training set: AUC = 0.79,

 

Test set: AUC = 0.77

Cavaco (2018)50

Saliva

GCMS

BC (66) vs healthy (40)

3-methyl-pentanoic acid, 4-methyl-pentanoic acid,

 

phenol, acetic acid, propanic acid, 1,2-decanediol

 

Sensitivity/specificity NA

Porto-Figueira et al. (2018)34

Urine

Needle Trap Microextraction (NTME)/GCMS

BC vs healthy

2-bromophenol, octanoic acid, phenol,

 

Sensitivity/specificity NA

Phillips et al. (2018)21

Breath

-GCMS: test accuracy = 90%

BC (54) vs healthy (124)

-GC-surface acoustic wave detection (GCSAW): test accuracy = 86%

Silva (2019)35

Urine

GCMS

BC (31) vs healthy (40)

10 compounds (sulfur compounds, terpenoids and

 

carbonyl compounds),

 

Sensitivity/Specificity NA, AUC = 0.842

de Leon-Martinez et al. (2020)51

Breath

“Electrical nose”, Compounds NA,

BC (262) vs healthy (181)

Sensitivity 100%, specificity 100%

Zhang et al. (2020)52

Breath

GCMS, combination of (S)‐1,2‐propanediol,

BC (78) vs healthy (71)

cyclopentanone, ethylenecarbonate, 3‐methoxy‐1,2

vs gastric cancer (54)

propanediol, 3‐methylpyridine, phenol,

 

and tetramethylsilane

 

Sensitivity 93.36%, specificity 71.6%

  1. BC breast cancer, GCMS gas chromatography–mass spectrometry, NA not applicable, AUC area under the curve.