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FH-deficient renal cell carcinoma case shows rapid bone metastasis despite adjuvant therapyRare Kidney Cancer Case Shows Aggressive Spread Despite Treatment

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Key Takeaway
Consider early genetic testing and aggressive surveillance in FH-deficient RCC given rapid metastasis risk.

This publication is a case report and literature review focusing on hereditary leiomyomatosis and renal cell carcinoma (HLRCC), specifically an FH-deficient renal cell carcinoma. The case involves a 42-year-old woman with multiple uterine leiomyomas who underwent radical nephrectomy and hysterectomy, followed by adjuvant immunotherapy and targeted therapy. Genetic testing confirmed an FH c.1240A>G, p. Lys414Glu mutation, and immunohistochemistry confirmed FH-deficient tumors.

Despite the adjuvant therapy, the patient experienced rapid bone metastasis postoperatively. This outcome highlights the aggressive nature of HLRCC-associated renal cell carcinoma and the challenges in its management. The authors emphasize the importance of early genetic testing and multidisciplinary surveillance for at-risk individuals.

The report is limited to a single case, so the findings are not generalizable. The authors do not report follow-up duration or specific outcomes beyond the occurrence of bone metastasis. No safety data beyond the adverse event of bone metastasis is provided.

For clinicians, this case serves as a reminder of the aggressive clinical course possible in FH-deficient RCC and the potential limitations of current adjuvant strategies. It underscores the need for heightened vigilance and early consideration of genetic testing in patients with suggestive features, such as uterine leiomyomas and renal tumors.

How this fits prior evidence

This case report aligns with prior coverage on renal cell carcinoma, specifically the aggressive nature of certain subtypes. While prior items noted favorable outcomes with repeat ablation for local recurrence and a strong correlation between disease-free survival and overall survival in localized RCC, this case illustrates a different scenario: a hereditary, FH-deficient RCC that progressed rapidly to bone metastasis despite surgery and adjuvant therapy. It contrasts with the more favorable outcomes seen in localized RCC and highlights the need for early genetic testing and aggressive surveillance in high-risk populations.

A case report describes a 42-year-old woman with a rare form of kidney cancer linked to an inherited condition called hereditary leiomyomatosis and renal cell carcinoma (HLRCC). She also had multiple uterine leiomyomas, which are noncancerous tumors. The report highlights how aggressive this cancer can be, even with treatment.

The woman underwent a radical nephrectomy to remove the affected kidney and a hysterectomy to remove her uterus. She also received adjuvant immunotherapy and targeted therapy. Genetic testing confirmed a mutation in the FH gene (c.1240A>G, p. Lys414Glu), and tests on the tumor tissue confirmed it was FH-deficient.

Despite these treatments, the cancer progressed rapidly, and she developed bone metastasis after surgery. This outcome underscores the challenges in managing HLRCC-associated kidney cancer. The report emphasizes the need for early genetic testing and a multidisciplinary approach to surveillance and treatment.

It's important to note that this is a single case report, so the findings cannot be generalized to all patients. The results are not proof that current treatments are ineffective, but they do highlight the aggressive nature of this specific cancer type. If you or a family member have a history of HLRCC or related symptoms, talk to a doctor about genetic counseling and appropriate monitoring.

What this means for you:
A rare kidney cancer case spread quickly despite treatment, stressing early genetic testing and close monitoring.

Common questions

What is hereditary leiomyomatosis and renal cell carcinoma (HLRCC)?

HLRCC is an inherited condition that increases the risk of certain tumors, including kidney cancer and leiomyomas (fibroids) in the uterus. It is caused by mutations in the FH gene. This case report highlights how aggressive the kidney cancer can be, even with treatment.

What treatments were used in this case?

The patient had surgery to remove the kidney (radical nephrectomy) and uterus (hysterectomy). She also received adjuvant immunotherapy and targeted therapy. Despite these treatments, the cancer spread to her bones quickly after surgery.

Why is early genetic testing important?

Early genetic testing can identify FH gene mutations, which may help guide treatment and surveillance. In this case, the mutation was confirmed, but the cancer still spread rapidly. The report stresses the need for early testing and a team approach to care, but it is based on a single case.

Study Details

Study typeSystematic review
EvidenceLevel 1
PublishedAug 2026
View Original Abstract ↓
Hereditary leiomyomatosis and renal cell carcinoma (HLRCC), caused by germline FH mutations, is a rare autosomal dominant syndrome. This report details a 42-year-old woman with aggressive FH-deficient renal cell carcinoma (RCC) and multiple uterine leiomyomas. Radical nephrectomy and subsequent hysterectomy confirmed FH-deficient tumors via immunohistochemistry and genetic testing (FH c.1240A>G, p. Lys414Glu). Despite adjuvant immunotherapy and targeted therapy, rapid bone metastasis occurred postoperatively. This case highlights the aggressive nature of HLRCC-associated RCC, underscores challenges in therapeutic management, and emphasizes the necessity of early genetic testing and multidisciplinary surveillance to improve outcomes.
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