Ana Beatriz Sánchez-Heras

Genetic and clinical characterization of a novel FH founder mutation in families with hereditary leiomyomatosis and renal cell cancer syndrome

Abstract Background Hereditary leiomyomatosis and renal cell cancer syndrome is a rare autosomal dominant hereditary syndrome. Previously, we published the largest cohort of FH mutation carriers in Spain and observed a highly recurrent missense heterozygous variant, FH(NM_000143.4):c.1118A > G p.(Asn373Ser), in 104 individuals from 31 apparently unrelated families. Here, we aimed to establish its founder effect and characterize the associated clinical phenotype. Results Haplotype analysis confirmed that families shared a common haplotype (32/38 markers) spanning 0.61–0.82 Mb, indicating this recurrent variant was inherited from a founder ancestor. Cutaneous and uterine leiomyomatosis were diagnosed in 64.6% (64/99) and 98% (50/51) of patients, respectively, and renal cell cancer was present in 10.4% (10/96). The pathogenic FH_c.1118A > G variant is a Spanish founder mutation that originated 12–26 generations ago. We estimate that the variant may have appeared between 1370 and 1720. Individuals carrying this founder mutation had similar frequency of renal cell cancer and a higher frequency of renal cysts and leiomyomas than those in other cohorts of this syndrome. Conclusions In the Spanish province of Alicante there is a high prevalence of HLRCC because of the founder mutation FH c.1118A > G; p.(Asn373Ser). The characterization of founder mutations provides accurate and specific information regarding their penetrance and expressivity. In individuals with suspected HLRCC from the province of Alicante, genetic testing by direct analysis of the founder FH c.1118A > G; p.(Asn373Ser) mutation may be a faster and more efficient diagnostic tool compared with complete gene sequencing.

Addressing unmet needs in long-term survivors of ovarian cancer (ENGOT ov40/NOGGO S13/GEICO 71-R/Expression VI): insights from a Spanish cohort

Ovarian cancer remains a significant global health concern. Contemporary therapeutics have led to an increased number of long-term survivors. This research investigates the unmet needs of long-term ovarian cancer survivors in Spain, focusing on persistent side effects, patient concerns, lifestyle changes, and ongoing challenges. This is a multi-center, cross-sectional, observational study, assessing the results from the international North-Eastern German Society of Gynecological Oncology survey, Expression VI - Long-term survival with ovarian cancer in Spain. Participants were identified during follow-up visits at oncology departments. A structured questionnaire of 68 items, including demographic, clinical, psychosocial, and lifestyle domains, was completed anonymously in printed format, with implied consent through survey completion. A total of 250 long-term ovarian cancer survivors from Spain, defined as patients diagnosed of malignant ovarian cancer with a survival ≥8 years since diagnosis (median age at diagnosis 52 years; median survival time 11 years), completed the survey. A substantial number of participants continued to experience long-term side effects, including gastrointestinal (90%), dermatologic (91.6%), and neurologic symptoms, such as memory problems (15.1%) and concentration difficulties (10.8%). Nearly half of the survivors (47.3%) expressed concerns about nervousness, 43.6% reported ongoing pain, and 40% struggled with sleep disturbances. Lifestyle changes after cancer diagnostic were significant, with 56.5% of smoker participants quitting or reducing smoking and 41.6% adopting healthier diets. Finally, our results indicate that most participants received some form of follow-up, primarily through blood biomarker monitoring (87.0%) and imaging tests (73.0%). This study highlights the persistent challenges among long-term ovarian cancer survivors in Spain, stressing the need for more comprehensive, tailored aftercare. These findings may be generalized to other regions, emphasizing the importance of addressing ongoing side effects and unmet care needs to improve survivors' long-term quality of life. Enhanced follow-up care, patient support, and effective communication are essential components of this effort.