Preliminary characterizations of a serum biomarker for sarcoidosis by comparative proteomic approach with tandem-mass spectrometry in ethnic Han Chinese patients

Table 1 Demographic information of subjects recruited for serum studies

Category	Sarcoidosis group	Control subjects
		Healthy group	Tuberculosis group	Other pulmonary disease group
Total subjects, n	64^*	26	35	38^▲
Age, years	48	49	45	46
Gender
Male	24	10	13	14
Female	40	16	22	24
CXR stage	0/18/38/8/0	N/A	N/A	N/A
0/I/II/III/IV ^§

^§ CXR = chest X-ray; N/A = not applicable; CXR stage: 0 = no adenopathy, no lung infiltrates; stage I = hilar & mediastinal adenopathy only; stage II = hilar & mediastinal adenopathy plus lung infiltrates; stage III = lung infiltrates only; stage IV = pulmonary fibrosis.
* All of the 64 case, 44 were not being treated, 20 were treated with corticosteroid, CXR stage as stated.
^▲ Other Pulmonary Disease Group including 10 cases of interstitial lung disease, 7 cases of chronic obstructive pulmonary disease (COPD), and 11 cases of lung cancer.

ISSN: 1465-993X