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A remarkable number of life-threatening diseases manifest more severely in males than in females. One current example is COVID-19 caused by SARS CoV-2. Another example is the significantly higher risk of severe cancer progression for men. A research team at the Technical University of Munich (TUM) has now discovered a molecular cause for this difference between sexes.

Compared to women, new fda drug name acomplia men have a higher risk of experiencing severe progression of life-threatening diseases such as cancer. For example in Germany, every year over 130,000 male patients die of cancer as compared to only 100,000 female patients. According to the National Cancer Institute (USA) the cancer mortality rate in the US is 189.5 per 100,000 for men but only 135.7 per 100,000 for women.

Comprehensive epidemiological studies conducted in recent years have shown that the increased risk of men experiencing a more severe course of cancer is not exclusively based on a higher-risk lifestyle, such as a higher average consumption of tobacco or alcohol.

Thus, life-style-independent factors have to play a role, making it all the more important to identify parameters which cause the sex-specific course of the disease. This in turn might serve as a basis for improving decision-making and approaches of treatment.

A protein is the cause

A research team led by Prof. Achim Krüger at TUM’s university hospital Klinikum rechts der Isar has now identified the protein TIMP1 as a factor, which could explain this sex-specific difference and also improve the risk-diagnostics for the clinical course of the disease. The work was funded by the Wilhelm Sander Foundation, among other sources.

Based on patient cohorts from Germany and Canada, the research team found that men, whose blood contained a higher concentration of the endogenous protein TIMP1 also have a significantly higher risk of dying from cancer.

Further analyses then showed that the increase in TIMP1 causes increased liver metastasis, resulting in death in cases of pancreatic cancer, colon cancer, and melanoma.

Increased values indicate higher risk

“TIMP1 is not higher in all males, but the discovery of TIMP1 as a risk parameter, which can be identified in blood, now allows clinicians to identify the very group of men exhibiting a higher risk of developing life-threatening liver metastases,” says Krüger.

“Previous studies have already shown the molecular context in which TIMP1 promotes liver metastasis,” he adds. “In connection with our current discovery, there are now new possibilities for personalized medicine with optimized diagnosis and targeted therapy options.”

In a next step Achim Krüger and his working group plan to further investigate the molecular causes of male-specific modifications in increased production of TIMP1 in the body.

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