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The therapeutic response in Gorham’s syndrome to the beta-blocking agent propranolol is correlated to VEGF-A, but not to VEGF-C or FLT1 expression
BMC Research Notes volume 8, Article number: 333 (2015)
Gorham’s syndrome is a rare illness of unknown etiology. It is characterized by a local proliferation of blood or lymphatic vessels that in bones leads to progressive resorption and destruction. The cause of the disease is not elucidated, and therapeutic options remain limited.
We report herein the case of a young female Caucasian patient aged 18 years with diffuse Gorham syndrome. In tissue specimens angiogenesis and massive lymphangiogenesis as well as the expression of vascular endothelial growth factor-A (VEGF-A) and neuropilins was observed. Lymphangiogenesis is a prominent feature of the disease and a number of lymphatic markers were found to be expressed, however only VEGF-A, but not vascular endothelial growth factor-C (VEGF-C) was found to be elevated in the circulation. Circulating levels of soluble VEGF receptor-1 were also not elevated. Furthermore, the patient responded favorably and the disease was stabilized following treatment with the beta-blocking agent Propranolol alone which acts on VEGF-A alone, but not on soluble VEGF receptor-1 levels.
This suggests that the disease is dependent on VEGF-A, but on neither VEGF-C, the major driver of lymphangiogenesis, nor FLT1. Furthermore, Propranolol acts on VEGF-A but not FLT1 expression.
Gorham’s syndrome is a rare illness of unknown etiology. It is characterized by a local proliferation of blood or lymphatic vessels that leads to progressive resorption and destruction in bones . The lesions consist of numerous thin walled vascular or lymphatic channels in association with massive osteolysis. The lesions may extend into adjacent bones, viscera or soft tissue, and may be accompanied by local fibrosis. The cause of the disease is not elucidated. The therapeutic options to treat this condition are still limited.
The use of Propranolol has been reported previously in infantile hemangioma , pediatric lymphatic malformation  and in Gorham’s syndrome [4, 5]. Vascular endothelial growth factor-A (VEGF-A) was previously shown to be increased in Gorham’s syndrome, and Propranolol to be able to decrease VEGF-A levels [5, 6]. However, the full spectrum of VEGF family members and, in particular, vascular endothelial growth factor-C (VEGF-C) and vascular endothelial growth factor receptor-1/fms-like tyrosine kinase-1 (VEGFR1 or FLT-1) has not been investigated and no definite explanation for the therapeutic effect was given.
We report herein the case of young Caucasian female patient of 18 years of age with diffuse Gorham’s syndrome. Surprisingly, since lymphangiogenesis is a prominent feature in the disease, VEGF-A but not VEGF-C was found to be elevated in the patient’s circulation. Circulating levels of soluble FLT-1 were also not elevated. Furthermore, the patient responded favorably to the β-blocking agent Propranolol which acts on VEGF-A, but not on FLT-1 levels.
Clinical symptoms were already present at the age of 9. At diagnosis at the age of 15, the patient exhibited pronounced diffuse lesions in bone and soft tissue (Figure 1a). Furthermore, this was accompanied by severe gynecological symptoms with loss of chylous/lymphatic liquid. Biopsies of cervical lesions revealed pronounced angiogenesis and lymphangiogenesis (Figure 1b). VEGF-A was strongly expressed at the site of the lesion along with neuropilin 1 (NRP1) and 2 (NRP2) (Figure 1b). Plasma VEGF-A levels were found to be increased by threefold in comparison to a pool (n = 6) of young healthy female donors (control 75.13, versus 233.42 pg/ml for the patient). VEGF-A levels before treatment were higher than those reported in breast cancer patients (136.22 ± 9.95 pg/ml) . The CARE Checklist (2013) of information is included in Additional file 1.
Because of the strong lymphangiogenic component found in the biopsy specimen, we hypothesised that VEGF-C levels would be highly up-regulated. However, in contrast to VEGF-A, we found that circulating VEGF-C levels were not increased, and were below the limit of. Furthermore, circulating FLT-1 (average: 20.58 ng/ml) was not increased (Figure 1c).
The fact that pronounced lymphangiogenesis is associated with elevated VEGF-A levels is in agreement with the observations of Halin et al. . They have shown that inflammation-induced lymphangiogenesis is potently blocked by systemic administration of a vascular endothelial growth factor (VEGF)-A neutralizing antibody and is, thus, dependent on VEGF-A.
In contrast to our results, Ozeki et al.  have reported that Plasma VEGF-A, C, and D levels are significantly higher in patients with lymphatic malformation in comparison to control samples. Lymphatic malformation and Gorham’s syndrome are not the same clinical entities which may explain the differences observed.
Treatment with Propranolol LP (2 mg/kg/day) was initiated. The patient responded well to this treatment with a disappearance of gynecological symptoms and stabilization of bone lesions. VEGF-A levels dropped after 3 months of treatment to nearly control levels. At 7 months of treatment, some increase in VEGF-A levels was observed which subsequently decreased again after 12 months of treatment. The rebound effect at 7 months may be due to transient treatment interruption by the patient since the heart rate increased during that period.
Morimoto et al.  have demonstrated that a combination treatment including surgery, interferon and Propranolol is able to improve the clinical evolution of Gorham’s syndrome. Furthermore, they showed with a single measurement (time point) that the combination of surgery, interferon and Propranolol™ is able to decrease VEGF-A levels. In opposition to these results, we demonstrate that Propranolol alone is able to improve clinical outcome and decreases VEGF-A levels measured at several time points. Soluble FLT1 could also explain the therapeutic effect because soluble FLT1 is an endogenous inhibitor of VEGF-A. However, soluble FLT1 is not up-regulated after Propranolol treatment. Nir et al.  described an effect of Propranolol on clinical outcome, but the study did not include measurement of VEGF family members or other angiogenic factors.
Our results suggest that, despite pronounced lymphangiogenesis, Gorham’s syndrome seems to be dependent on VEGF-A and not on VEGF-C or FLT-1. Furthermore, this case demonstrates that Propranolol can be safely administered and has striking therapeutic efficacy as a single agent in Gorham’s syndrome by decreasing circulating VEGF-A but not by modifying VEGF-C or FLT-1 levels.
cluster of differentiation 31
cluster of differentiation 34
lymphatic vessel endothelial hyaluronan receptor-1
vascular endothelial growth factor
vascular endothelial growth factor
fms-like tyrosine kinase-1
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JB and AL performed experiment. DG provided patient materials (clinical data, tissue samples). AB designed the study and wrote the article. JB, AB, AL and DG analyzed the data. All authors read and approved the final manuscript.
This work was supported by funding from the « Institut National de la Santé et de la Recherche médicale (INSERM) ». The authors thank Lindsay Cooley (INSERM U1029) for critically reading the manuscript.
Compliance with ethical guidelines
Competing interests The authors declare that they have no competing interests.
“Written informed consent was obtained from the patient for publication of this Case report and any accompanying images. A copy of the written consent is available for review by the Editor of this journal.”
Jessica Baud and Abderrahim Lomri are the co-first authors
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Baud, J., Lomri, A., Graber, D. et al. The therapeutic response in Gorham’s syndrome to the beta-blocking agent propranolol is correlated to VEGF-A, but not to VEGF-C or FLT1 expression. BMC Res Notes 8, 333 (2015) doi:10.1186/s13104-015-1259-9
- Gorham’s syndrome