Variations in Serum Steroid Hormones and Complement Levels throughout Different Stages of Lung Cancer

Authors

DOI:

https://doi.org/10.14500/aro.12827

Keywords:

Biomarker, Complement system proteins, Glucocorticoids, Lung cancer, Steroid hormones

Abstract

Lung cancer is a leading cause of cancer mortality worldwide. Steroid hormones and complement proteins may contribute to lung cancer progression and immune regulation. This case-control study enrolled 111 individuals, including 66 newly diagnosed patients with lung cancer and 45 healthy controls. Blood samples were collected from all participants between 7:00 and 9:00 AM following an overnight fast of at least 8 h before the initiation of any treatment in the lung cancer patient group. Serum steroid hormones were statistically higher in the lung cancer group than in the control group (p = 0.0001). In addition, the levels of serum complement C3 (p = 0.006) and C4 (p < 0.0001) in the lung cancer group were higher than those in the control group. Levels increased with disease progression. Elevated serum concentrations of pregnenolone (odds ratio [OR] = 5.12, p = 0.036) and progesterone (OR = 7.20, p = 0.023) were significantly associated with an increased risk of lung cancer. The discriminatory power for serum cortisol (area under the curve [AUC] = 0.927), progesterone (AUC = 0.948), dehydroepiandrosterone (AUC = 0.935), and complement C4 was excellent (AUC = 0.962). Increased expression of several steroid hormones and complement proteins is linked to lung cancer and continuously increases with the development of the disease. Most of the steroid hormones and complement C4 showed a favorable capacity for early diagnosis and risk prediction of lung cancer. Nevertheless, pregnenolone and progesterone are now identified as the most relevant independent biomarkers.

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Author Biographies

Van A. Ahmed, Department of Basic Science, College of Pharmacy, University of Sulaimani, Sulaimani, Kurdistan Region, Iraq

Van A. Ahmed is a lecture at the Department of Basic Science, College of Pharmacy, University of Sulaimani. He got the B.Sc. degree in pharmacy from the College of Pharmacy, University of Sulaimani, and the M.Sc. degree in clinical biochemistry. His research interests are in the identification and clinical validation of diagnostic and prognostic biomarkers in cancer and other chronic diseases. Enzymology, metabolic disorder reaction, cancer biomarkers, inflammatory and oxidative stress pathways, and nanomedicine.

Hazhar M. Balaky, Department of Biology, Faculty of Science, Soran University, Soran-Erbil, Kurdistan Region, Iraq

Hazhar M. Hamadameen is an Assistant Professor at the Department of Biology, Faculty of Science, Soran University. He received the B.Sc. degree in Biology from the College of Science, University of Salahaddin, Erbil, Iraq (2008), the M.Sc. degree in Biotechnology from the Faculty of Bioscience and Medical Engineering, University of Technology Malaysia (UTM), Malaysia (2013), and the Ph.D. degree in Biology (Medical Physiology) from the Faculty of Science, Soran University, Kurdistan Region, Iraq (2021). His research interests are in medical physiology, with a focus on metabolic disorders, cancer biomarkers, inflammatory and oxidative.
stress pathways, and adipokine physiology.

Namama S. Hamad, Department of Chemistry, College of Science, University of Sulaimania, Sulaimani, Kurdistan Region, Iraq

Namama S. Hamad is a lecture at the Department of Chemistry, College of science, University of Sulaimani. She got the B.Sc. degree in Chemistry from the College of Science, University of Sulaimani, MSc degree in biochemistry and the Ph.D degree in clinical biochemistry. Her research interests are in enzymology, metabolic disorder reaction, and molecular biology.

Parween A. Ismail, Department of Chemistry, College of Education, University of Salahaddin, Erbil, Kurdistan Region, Iraq

Parween A. Ismail is a Professor at Department of Chemistry, College of Education, University of Salahaddin. She earned a B.Sc. in Chemistry from the Salahaddin University-Erbil in 1995, M.Sc. in Clinical Biochemistry from the University of Salahaddin in 2001, and a Ph.D. in clinical biochemistry from the Hawler Medical University Department of Clinical Biochemistry in 2011. Her research interests focus on Clinical Biochemistry, Biomarker discovery, Molecular diagnostics, and Cancer Biochemistry. 

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Published

2026-06-20

How to Cite

Ahmed, V. A. (2026) “Variations in Serum Steroid Hormones and Complement Levels throughout Different Stages of Lung Cancer”, ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY, 14(1), pp. 395–403. doi: 10.14500/aro.12827.
Received 2026-01-12
Accepted 2026-03-24
Published 2026-06-20

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