Rising Lung Cancer Burden Among Women
Lung cancer is becoming a growing threat for women because incidence and mortality are rising even as men’s rates fall, and women face distinct biologic, treatment, quality-of-life, and fertility-related challenges that remain understudied and undertreated.
While the incidence of lung cancer is decreasing in men, it continues to rise in women. With more than 19,000 new cases in France each year, lung cancer is now the third most commonly diagnosed cancer among women. This trend is also seen in other European countries but appears to be region-specific because other continents report a decline in incidence among women. Moreover, although overall prognosis remains better in the female population, the trend is worrying: Mortality associated with the disease is increasing in women, unlike in men with lung cancer. A session at the French-Language Pneumology Congress held from January 30 to February 1, 2026, in Lille, France, provided an opportunity to review the situation.
Efficacy and Toxicity
Lung tumors in women have a distinct tumor profile: Women have a higher proportion of adenocarcinomas than men and a higher frequency of somatic mutations (EGFR, BRAF, or HER2), including in nonsmokers. In addition, 65% of lung cancers in women are associated with smoking compared with 87% of those in men.
The role of estrogens is central because they interact directly with tumor growth signaling pathways. Moreover, “sex is the second leading factor of variability in drug pharmacokinetics after weight and accounts for 28% of anticancer drug kinetics,” emphasized Julien Mazières, pulmonologist, Toulouse University Hospital, Toulouse, France. Also involved in this equation are a higher body fat percentage, lower gastric acidity, and, above all, reduced renal and hepatic clearance.
As a result, exposure to drugs — represented by the area under the curve — is often greater in women and translates into not only improved progression-free survival with targeted therapies and chemotherapy but also increased toxicity. Carboplatin and paclitaxel are among the drugs whose kinetics are most affected by clearance. There are differences in clearance of more than 20% for these drugs in women vs men, though dosages are not systematically adjusted except for weight-based dosing. This vulnerability to adverse effects is particularly pronounced with targeted therapies, with more neuropsychiatric and gastrointestinal disorders. Data on the efficacy of immunotherapy in lung cancer by sex are contradictory. However, endocrine-related adverse effects and pneumonitis are more frequent in women, especially before menopause.
Women remain underrepresented in clinical trials, and sex-specific analyses of results are too rarely performed, which limits understanding of mechanisms and prevents tailoring management recommendations according to sex.
Impaired Quality of Life
Lung cancer most severely impairs physical functioning in women. “In the absence of sex-stratified studies, psycho-oncologists’ experience suggests that women have more cognitive disorders, anxiety, and depression associated with this disease. Its impact on quality of life is major, with deterioration of social relationships and reduced treatment adherence,” summarized Céline Mascaux, MD, PhD, pulmonologist, Strasbourg University Hospital, Strasbourg, France. Women also face social and family pressure — a mental burden that pushes them to “hold on” for their loved ones. Regarding sexual health, women with lung cancer who are sexually active often report dissatisfaction with the quality of their sexual relations because of fatigue, lack of energy, sadness, and shortness of breath, not to mention treatment-related sexual dysfunction. These problems are often not given sufficient attention by physicians.
Finally, fertility requires greater attention from the medical community: According to the VICAN study conducted by France’s National Health Insurance Fund, a discussion about fertility preservation did not take place at the time of cancer diagnosis for 60% of men and 67% of women of childbearing age. “In lung cancer specifically, the desire for children nevertheless exists in nearly 40% of patients of childbearing age,” regretted Jacques Cadranel, pulmonologist, Tenon Hospital, Paris, France. This desire does not appear to have influenced therapeutic strategy, and fertility preservation was ultimately proposed in only a third of cases and was carried out in only 3% of women compared with21% of men.
This story has been translated from Univadis France, part of the Medscape Professional Network.
A version of this story first appeared on Medscape.com