View clinical trials related to Von Hippel-Lindau Disease.
Filter by:This study will examine whether he drug ranibizumab can slow or stop the growth of angiomas (blood vessel tumors) in patients with Von Hippel-Lindau syndrome (VHL). Angiomas commonly develop in the back of the eye on the retina and the optic nerve in patients with VHL. Although these tumors are not cancerous, they may cause significant vision loss. Current treatments, including laser therapy, cryotherapy, and vitrectomy, may not be successful or possible for all patients. Ranibizumab decreases production of VEGF, a growth factor that is important for the formation of new blood vessels and that is elevated in patients with VHL. Preliminary findings from other studies suggest that ranibizumab can reduce retinal thickening caused by vessel and tumor growth and improve vision. Patients 18 years of age and older with retinal angiomas due to VHL in one or both eyes and central vision loss of 20/40 or worse may be eligible for this study. Participants undergo the following tests and procedures: - Medical history, physical examination, electrocardiogram (EKG) and blood tests. - Eye examination, including eye pressure measurement and dilation of the pupils to examine the retina. - Fluorescein angiography to evaluate the eye's blood vessels. For this test, a yellow dye is injected into an arm vein and travels to the blood vessels in the eyes. Pictures of the retina are taken using a camera that flashes a blue light into the eye. The pictures show if any dye has leaked from the vessels into the retina, indicating possible blood vessel abnormality. - Optical coherence tomography to measure retinal thickness. The eyes are examined through a machine that produces cross-sectional pictures of the retina. These measures are repeated during the study to determine changes, if any, in retinal thickening. - Stereoscopic color fundus photography to examine the back of the eye. The pupils are dilated with eye drops to examine and photograph the back of the eye. - Electroretinogram (ERG) to measure electrical responses generated from within the retina. For this test, the patient sits in a dark room for 30 minutes with his or her eyes patched. Then, a small silver disk electrode is taped to the forehead, the eye patches are removed, the surface of the eye is numbed with eye drops, and contact lenses are placed on the eyes. The patient looks inside an open white globe that emits a series of light flashes for about 20 minutes. The contact lenses sense small electrical signals generated by the retina when the light flashes. - Ranibizumab injections to treat ocular angiomas. Ranibizumab is injected through a needle into the eye's vitreous (gel-like substance that fills the inside of the eye). Seven injections are given over a 28-week period. Before each injection, the surface of the eye is numbed with anesthetic eye drops. This is followed by injection of another anesthetic into the lower portion of the eye in the clear tissue surrounding the white of the eye. After a few minutes, the ranibizumab is injected into the vitreous. Patients receive ranibizumab injections at the first visit (during enrollment) and again at 4, 8, 12, 16, 20 and 24 weeks after the first injection. At the 28-week visit, the doctor will determine if further treatment is needed. Patients can continue to have injections every 4 weeks until 1 year of follow-up (54 weeks). At each injection visit, participants repeat most of the tests described above to evaluate the response to treatment and return a week later for another eye examination.
This study will examine whether the drug 17AAG (17-allylamino 17-demethoxygeldanamycin) can shrink kidney tumors in patients with Von Hippel-Lindau disease (VHL), a rare, inherited syndrome in which patients develop tumors in certain parts of the body. 17AAG contributes to the destruction of proteins in cells that may play in role in causing cancer and spurring tumor growth. The study will also look at the effect of 17AAG on other tumors patients may have that are caused by VHL, on the amount of blood vessels in the tumors, on the biologic activity of the tumor, and on cells circulating in the bloodstream, as well as the safety of the drug and its impact on the kidney tumor in patients whose tumor(s) is removed. Patients 18 years of age and older with von Hippel-Lindau disease who have at least one kidney tumor large enough to pose a risk of metastasis (spread of cancer to other parts of the body) may be eligible for this study. Candidates are screened with a medical history and physical examination, computed tomography (CT) scan, brain magnetic resonance imaging (MRI), see below), and blood and urine tests. Additional tests, including a 24-hour urine collection, ultrasound of the testicles in men, hearing test, eye exam, and MRI of the spine, may be done if recent test results are not available. Participants undergo the following tests and procedures: MRI: This test uses a strong magnetic field and radio waves to show structural and chemical changes in tissue. During the scan, the patient lies on a table in a narrow cylinder containing a magnetic field, wearing earplugs to muffle loud noises that occur with electrical switching of the magnetic fields. A catheter (plastic tube) is inserted into the patient's arm to administer a contrast dye that enhances the images. 17AAG treatment: Patients receive 17AAG infusions into a vein once a week for 3 weeks out of every 4, for 3 months. The infusions last up to 1 to 2 hours. Repeat testing: After 3 months, patients have repeat MRI scans to measure changes in tumor activity, blood flow, and number of blood vessels in the tumor since the pretreatment scans. They may have additional tests, including a CT scan, eye exam, and other tests to evaluate the effect of 17AAG on the tumors.
RATIONALE: The identification of gene mutations in individuals who have or are at risk for von Hippel-Lindau syndrome may allow doctors to better determine the genetic processes involved in the development of cancer. PURPOSE: This genetic study is finding gene mutations in participants with von Hippel-Lindau syndrome or who are at risk for developing von Hippel-Lindau syndrome.
Von Hippel-Lindau disease (VHL) is an inherited cancer syndrome. Patients are at risk for developing pancreatic cysts and tumors. These tumors are more aggressive in some people than in others. To learn more about this disease, its genetic cause and how best to treat it, this study will 1) identify patients with VHL who have pancreatic lesions; 2) examine the characteristics of the lesions and how fast they grow; 3) study how well imaging tests can reveal lesion characteristics that will help in diagnosis; and 4) perform genetic studies using blood and, when possible, tissue samples. Patients 12 years of age and older with VHL involving the pancreas may be eligible for this study. Participants will undergo some or all of the following tests and procedures: - Interviews with a cancer doctor, cancer nurses, and a surgeon (if surgery is recommended). - Computed tomography (CT) scan of the abdomen, chest, or pelvis. This test uses x-rays to produce images of body tissues and organs in small sections. - Magnetic resonance imaging (MRI) of the abdomen. This test uses radio waves and a strong magnetic field to produce images of body tissues and organs. - Ultrasound of the abdomen. This test uses sound waves to create images body tissues and organs. - Blood tests for routine laboratory chemistries, for tests specific to the pancreas, and for genetic studies - 24-hour urine studies After the tests are completed, the doctor will discuss the results with the patient. Patients with a pancreatic tumor that requires surgery will be offered the option of an operation to remove as much tumor as possible. Patients with lesions that are not appropriate for surgery will be asked to return to National Institutes of Health (NIH) for scans and x-rays every year to monitor growth of the lesions. If surgery should become advisable in the future, the option will be discussed at that time. Patients with pancreatic cysts will be asked to return to NIH every 2 years for scans and x-rays to monitor their condition.
This study will test the ability of the experimental drug EYE001 to reduce retinal thickening and improve vision in patients with Von Hippel-Lindau syndrome (VHL). Angiomas (blood vessel tumors) commonly develop in the back of the eye on the retina and the optic nerve in patients with VHL. Although the tumors are not cancerous, they may cause significant vision loss. Current treatments, including laser therapy, cryotherapy, and vitrectomy, may not be successful or possible for all patients. EYE001 decreases production of VEGF, a growth factor that is important for the formation of new blood vessels and that is elevated in VHL. Preliminary findings from studies of other retinal diseases suggest that EYE001 can reduce retinal thickening and improve vision. Patients 18 years of age and older with retinal angiomas due to VHL in one or both eyes and central vision loss of 20/40 or worse may be eligible for this study. Participants will undergo the following tests and procedures: - Medical history, physical examination, electrocardiogram (EKG) and blood tests. - Eye examination, including eye pressure measurement and dilation of the pupils to examine the retina. - Fluorescein angiography to evaluate the eye's blood vessels. For this test, a yellow dye is injected into an arm vein and travels to the blood vessels in the eyes. Pictures of the retina are taken using a camera that flashes a blue light into the eye. The pictures will reveal if any dye has leaked from the vessels into the retina, indicating possible blood vessel abnormality. - Optical coherence tomography to measure retinal thickness. The eyes are examined through a machine that produces cross-sectional pictures of the retina. These measures are repeated during the study to determine changes, if any, in retinal thickening. - Electroretinogram (ERG) to measure electrical responses generated from within the retina. For this test, the patient sits in a dark room for 30 minutes with his or her eyes patched. Then, a small silver disk electrode is taped to the forehead, the eye patches are removed, the surface of the eye is numbed with eye drops, and contact lenses are placed on the eyes. The patient looks inside an open white globe that emits a series of light flashes for about 20 minutes. The contact lenses sense small electrical signals generated by the retina when the light flashes. - Stereoscopic color fundus photography to examine the back of the eye. The pupils are dilated with eye drops to examine and photograph the back of the eye. - EYE001 injections to treat ocular angiomas. Patients receive EYE001 injections through a needle into the eye's vitreous (gel-like substance that fills the inside of the eye). Six injections are given over a 30-week period. Before each injection, the surface of the eye is numbed with anesthetic eye drops. This is followed by injection of another anesthetic into the lower portion of they eye in the clear tissue surrounding the white of the eye. After a few minutes, the EYE001 is injected into the vitreous. Patients receive EYE001 injections at the first visit (during enrollment) and again at 6, 12, 18, 24, and 30 weeks after the first injection. At each injection visit, participants repeat most of the tests described above to evaluate the response to treatment and return a week later for another eye examination. After the last injection, patients whose vision has improved may receive three more treatments at visits 36, 42, and 48. All participants will return for examinations at week 54 and at 2 months after their final injection.
The purpose of this study is to determine whether PTK787/ZK 222584 is effective in treating hemangioblastoma of the brain and/or retina in patients with von Hippel-Lindau disease. The study will also assess safety and tolerability of PTK787/ZK 222584, and changes in markers of angiogenesis (new blood vessel growth).
The von Hippel Lindau (VHL) gene has recently been identified as the genetic defect resulting in a syndrome of multiple neoplasias. Patients with VHL disease develop retinal angiomata, renal cysts and/or carcinomas, CNS hemangioblastomas as well as pancreatic cysts and pheochromocytomas. Investigators have shown the gene to be a tumor suppressor type proto-oncogene located at chromosomal locus 3p26. The gene includes three exons whose gene product targets a cellular transcription factor Elongin SIII. Binding of the VHL proteins to two subunits of this elongation factor inhibits transcription and may play a crucial role in the clinical development of the von Hippel Lindau phenotype.