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Survival rates for those diagnosed with typical PKAN is 11.18 years with a standard deviation of 7.8 years.
Due to neuroferritinopathy’s genetic etiology, the disorder is not currently curable. Furthermore, progression of the disorder is unable to be effectively halted. Therefore current treatment focuses on managing symptoms of the disorder.
No medication is available to treat all symptoms. Botox has been shown to help with focal dystonia. The dopamine depleter Tetrabenazine shown to help with involuntary movements. Symptoms affecting movement (dystonia) have also been treated with L-Dopa, orphenadrine, benzhexol, sulpiride, diazepam, clonazepam, and deanol. Parkinsonian symptoms were not decreased by L-Dopa. Iron supplements should be avoided.
An effective treatment has yet to be found. In many cases electrical stimulation of the globus pallidus has been shown to produce improvement of dystonia severity, however it has not been shown to delay neurodegeneration. There is often overlap in the phenotypes of the symptoms both between different NBIA disorders and between NBIA and other disorders, leading to misdiagnoses. Treatments typically treat or ameliorate the symptoms and do not address the accumulation of iron. Psychotherapy, such as dopaminergic drugs, anticholinergics, tetrabenazine, is often used to treat the symptoms but does not improve the long term outcome of the patient.
The group includes the following disorders:
- Pantothenate kinase-associated neurodegeneration (PKAN) also known as neurodegeneration with brain iron accumulation 1 (NBIA1) and Hallervorden–Spatz syndrome
- PLAN (PLA2G6-associated neurodegeneration)
- MPAN (Mitochondrial membrane protein-associated neurodegeneration)
- BPAN (Beta-propeller protein-associated neurodegeneration)
- FAHN (Fatty acid hydroxylase-associated neurodegeneration)
- Kufor–Rakeb syndrome
- Neuroferritinopathy
- Aceruloplasminemia
- Woodhouse–Sakati syndrome
- CoPAN (CoA synthase protein-associated neurodegeneration)
- Idiopathic NBIA
- Neurodegeneration with brain iron accumulation 2B (NBIA2B)
- Neurodegeneration with brain iron accumulation 3 (NBIA3)
There have been no major breakthroughs in the treatment of PKAN, with most pharmacologic treatments focusing on the easing or temporary relieving of PKAN’s symptoms. Iron chelating agents have been used somewhat successfully in retarding the disorder, but they have not been a significant success.
Current research focuses on the future use of high dose pantothenate, the PANK2 enzyme substrate, in possibly alleviating symptoms as well as the further development of iron chelating agents that may be better aimed at reaching the central nervous system and working to better remove excess iron from the individual’s system.
Complications may result from the medication used to treat symptoms. Immobility from the disease can also lead to skin breakdown, respiratory infections, and blood clots, among others.
Treatment includes the use of iron chelating agents (such as desferrioxamine) to lower serum ferritin concentration, brain and liver iron stores, and to prevent progression of neurologic symptoms. This, combined with fresh-frozen human plasma (FFP) effectively in decreasing liver iron content. Repetitive use of FFP can even improve neurologic symptoms. Antioxidants such as vitamin E can be used simultaneously to prevent tissue damage to the liver and pancreas.
New potential treatment options being researched are Venesection (removing red blood cells), Iron chelation with deferiprone, and Coenzyme Q10 (ubiquinone).
A painkiller available in several European countries, Flupirtine, has been suggested to possibly slow down the progress of NCL, particularly in the juvenile and late infantile forms. No trial has been officially supported in this venue, however. Currently the drug is available to NCL families either from Germany, Duke University Medical Center in Durham, North Carolina, and the Hospital for Sick Children in Toronto, Ontario.
In late 2007, it was reported by Dr. David Pearce et al. that Cellcept, an immunosuppressant medication commonly used in bone marrow transplants, may be useful in slowing down the progress of Juvenile NCL. Fundraising is currently underway to gather the funds needed to start a clinical trial to test the safety and efficiency of CellCept for Juvenile NCL.
Batten disease is a terminal illness; the FDA has approved Brineura (cerliponase alfa) as a treatment for a specific form of Batten disease. Brineura is the first FDA-approved treatment to slow loss of walking ability (ambulation) in symptomatic pediatric patients 3 years of age and older with late infantile neuronal ceroid lipofuscinosis type 2 (CLN2), also known as tripeptidyl peptidase-1 (TPP1) deficiency. Palliative treatment is symptomatic and supportive.
In June 1987, a phase-I clinical trial was launched at Weill Cornell Medical College of Cornell University to study a gene therapy method for treatment of the signs and symptoms of LINCL. The experimental drug works by delivering a gene transfer vector called AAV2CUhCLN2 to the brain. Although the trial is not matched, randomized, or blinded and lacked a contemporaneous placebo/sham control group, assessment of the primary outcome variable suggests a slowing of progression of LINCL in the treated children.
Researchers believe the neurological deficits common in JNCL could be due to overactive AMPA receptors in the cerebellum. To test this hypothesis, researchers administered AMPA antagonist drugs into affected mice. The motor skills of the affected mice showed significant improvement after the antagonist treatment, which supported the hypothesis that the neurological deficits in JNCL are due to overactive AMPA receptors. This research could eventually help to alleviate neurological deficits of JNCL in humans.
In November 2006, after receiving FDA clearance, neurosurgeon Nathan Selden, pediatrician Bob Steiner, and colleagues at Doernbecher Children's Hospital at Oregon Health and Science University began a clinical study in which purified neural stem cells were injected into the brain of Daniel Kerner, a six-year-old child with Batten disease, who had lost the ability to walk and talk. This patient was the first of six to receive the injection of a stem cell product from StemCells Inc., a Palo Alto biotech company. These are believed to be the first-ever transplants of fetal stem cells into the human brain. By early December, the child had recovered well enough to return home, and some signs of speech returning were reported. Daniel Kerner died on April 12, 2010. The main goal of phase-I clinical trials, however, was to investigate the safety of transplantation. Overall, the phase-I data demonstrated that high doses of human neural stem cells, delivered by a direct transplantation procedure into multiple sites within the brain, followed by 12 months of immunosuppression, were well tolerated by all six patients enrolled in the trial. The patients’ medical, neurological, and neuropsychological conditions, following transplantation, appeared consistent with the normal course of the disease.
Mycophenolate mofetil is being tested to determine its ability to safely slow or halt neurodegeneration. A non-randomised safety and efficacy trial of a gene transfer vector is underway.
In 2014 the European Medicines Agency (EMA) granted orphan drug designation to arimoclomol for the treatment of Niemann-Pick type C. This was followed in 2015 by the U.S. Food & Drug Administration (FDA). Dosing in a placebo-controlled phase II/III clinical trial to investigate treatment for Niemann-Pick type C (for patients with both type C1 and C2) using arimoclomol began in 2016. Arimoclomol, which is orally administered, induces the heat shock response in cells and is well tolerated in humans.
In April 2009, hydroxypropyl-beta-cyclodextrin (HPbCD) was approved under compassionate use by the U.S. Food and Drug Administration (FDA) to treat Addison and Cassidy Hempel, identical twin girls suffering from Niemann–Pick type C disease. Medi-ports, similar to ports used to administer chemotherapy drugs, were surgically placed into the twins' chest walls and allow doctors to directly infuse HPbCD into their bloodstreams. Treatment with cyclodextrin has been shown to delay clinical disease onset, reduced intraneuronal storage and secondary markers of neurodegeneration, and significantly increased lifespan in both the Niemann–Pick type C mice and feline models. This is the second time in the United States that cyclodextrin alone has been administered in an attempt treat a fatal pediatric disease. In 1987, HPbCD was used in a medical case involving a boy suffering from severe hypervitaminosis A.
On May 17, 2010, the FDA granted Hydroxypropyl-beta-cyclodextrin orphan drug status and designated HPbCD cyclodextrin as a potential treatment for Niemann–Pick type C disease. On July 14, 2010, Dr. Caroline Hastings of UCSF Benioff Children's Hospital Oakland filed additional applications with the FDA requesting approval to deliver HPbCD directly into the central nervous systems of the twins in an attempt to help HPbCD cross the blood–brain barrier. The request was approved by the FDA on September 23, 2010, and bi-monthly intrathecal injections of HPbCD into the spine were administered starting in October 2010.
On December 25, 2010, the FDA granted approval for HPbCD to be delivered via IV to an additional patient, Peyton Hadley, aged 13, under an IND through Rogue Regional Medical Center in Medford, Oregon. Soon after in March 2011, approval was sought for similar treatment of his sibling, Kayla, age 11, and infusions of HPbCD began shortly after. Both have since begun intrathecal treatments beginning in January 2012.
In April 2011, the National Institutes of Health (NIH), in collaboration with the Therapeutics for Rare and Neglected Diseases Program (TRND), announced they were developing a clinical trial utilizing cyclodextrin for Niemann–Pick type C patients.
On September 20, 2011, the European Medicines Agency (EMA) granted HPbCD orphan drug status and designated the compound as a potential treatment for Niemann–Pick type C disease.
On December 31, 2011, the FDA granted approval for IV HPbCD infusions for a fifth child in the United States, Chase DiGiovanni, under a compassionate use protocol. The child was 29 months old at the time of his first intravenous infusion, which was started in January 2012.
Due to unprecedented collaboration between individual physicians and parents of children afflicted with NPC, approximately 15 patients worldwide have received HPbCD cyclodextrin therapy under compassionate use treatment protocols. Treatment involves a combination of intravenous therapy (IV), intrathecal therapy (IT) and intracerebroventricular (ICV) cyclodextrin therapy.
On January 23, 2013, a formal clinical trial to evaluate HPβCD cyclodextrin therapy as a treatment for Niemann–Pick disease, type C was announced by scientists from the NIH's National Center for Advancing Translational Sciences (NCATS) and the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD). A Phase I clinical trial is currently being conducted at the NIH Clinical Center.
Type A Niemann–Pick disease (about 85% of cases) has an extremely poor prognosis, with most cases being fatal by the age of 18 months. Type B (adult onset) and type C (mutation affecting a different molecule) Niemann–Pick diseases have a better prognosis.
An average clinical profile from published studies shows that the median onset age for HDLS patients is 44.3 years with a mean disease duration of 5.8 years and mean age of death at 53.2 years. As of 2012, there have been around 15 cases identified with at least 11 sporadic cases of HDLS. HDLS cases have been located in Germany, Norway, Sweden, and the United States, showing an international distribution focusing between Northern Europe and the United States.
Through the study of numerous kindred, it was found that the disease did not occur among just males or females, but rather was evenly distributed indicative of an autosomal rather than a sex-linked genetic disorder. It was also observed that the HDLS cases did not skip generations as it would occur with a recessive inheritance, and as such has been labeled autosomal dominant.
The treatment to battle the disease chorea-acanthocytosis is completely symptomatic. For example, Botulinum toxin injections can help to control orolingual dystonia.
Deep Brain Stimulation is a treatment that has varied effects on the people suffering from the symptoms of this disease, for some it has helped in a large way and for other people it did not help whatsoever, it is more effective on specific symptoms of the disease. Patients with chorea-acanthocytosis should undergo a cardiac evaluation every 5 years to look for cardiomyopathy.
Neurodegeneration with brain iron accumulation (NBIA) is a group of inherited neurological disorders in which iron accumulates in the basal ganglia, resulting in progressive dystonia, Parkinsonism, spasticity, optic atrophy or retinal degeneration and neuropsychiatric abnormalities. NBIA disorders have been associated with genes in synapse and lipid metabolism related pathways. Describes a group of disorders characterized by an accumulation of brain iron and the presence of axonal spheroids in the central nervous system. Iron accumulation can occur any where in the brain, with accumulation typically occurring in globus pallidus, substantia nigra, pars reticula, striatum and cerebellar dentate nuclei. Symptoms can include various movement disorders, seizures, visual disturbances, and cognitive decline, usually in combination. The known causes of NBIA disorders are mutations in genes directly involved in iron metabolism, impaired phospholipid and ceramide metabolism, lysosomal disorders, as well as mutations in genes with unknown functions. Onset can occur at different ages, from early childhood to late adulthood. Magnetic resonance imaging (MRI) is used to distinguish between the different forms of NBIA due to the accumulation of iron in different areas of the brain. Patients typically fall into two different categories: (1) early onset, rapid progression or (2) late onset, slow progression. The first type is considered to be the classic presentation, while the second type is the atypical presentation. Phenotypes of the different disorders appear to be dependent on age, i.e. amount of iron accumulation and cognitive ability.
No specific treatment is known for type A, but symptoms are treated.
In adult patients with type B, physicians try to keep cholesterol levels down to normal levels. If statins are used, they monitor liver function. If the spleen is enlarged and platelet levels low, acute episodes of bleeding may require transfusions of blood products. If they have symptoms of interstitial lung disease, they may need oxygen.
Anecdotally, organ transplant has been attempted with limited success. Future prospects include enzyme replacement and gene therapy. Bone marrow transplant has been tried for type B.
In January 2009, Actelion announced the drug miglustat (Zavesca) had been approved in the European Union for the treatment of progressive neurological manifestations in adult patients and pediatric patients with NPC. The drug is available to patients in the United States on an experimental basis. In March 2010, the FDA requested additional preclinical and clinical information regarding Zavesca from Actelion before making a final decision on approving the drug in the United States for NPC.
Children of affected individuals are obligate carriers for aceruloplasminemia. If the CP mutations has been identified in a related individual, prenatal testing is recommended. Siblings of those affected by the disease are at a 25% of aceruloplasminemia. In asymptomatic siblings, serum concentrations of hemoglobin and hemoglobin A1c should be monitored.
To prevent the progression of symptoms of the disease, annual glucose tolerance tests beginning in early teen years to evaluate the onset of diabetes mellitus. Those at risk should avoid taking iron supplements.
Hereditary diffuse leukoencephalopathy with spheroids (HDLS) is a rare adult onset autosomal dominant disorder characterized by cerebral white matter degeneration with demyelination and axonal spheroids leading to progressive cognitive and motor dysfunction. Spheroids are axonal swellings with discontinuous or absence of myelin sheaths. It is believed that the disease arises from primary microglial dysfunction that leads to secondary disruption of axonal integrity, neuroaxonal damage, and focal axonal spheroids leading to demyelination. Spheroids in HDLS resemble to some extent those produced by shear stress in a closed head injury with damage to axons, causing them to swell due to blockage of axoplasmic transport. In addition to trauma, axonal spheroids can be found in aged brain, stroke, and in other degenerative diseases. In HDLS, it is uncertain whether demyelination occurs prior to the axonal spheroids or what triggers neurodegeneration after apparently normal brain and white matter development, although genetic deficits suggest that demyelination and axonal pathology may be secondary to microglial dysfunction. The clinical syndrome in patients with HDLS is not specific and it can be mistaken for Alzheimer's disease, frontotemporal dementia, atypical Parkinsonism, multiple sclerosis, or corticobasal degeneration.
In terms of beta-mannosidosis treatment there is none currently, individuals that exhibit muscle weakness or seizures are treated based on the symptoms(since there's no cure)
There is no cure for HD, but there are treatments available to reduce the severity of some of its symptoms. For many of these treatments, evidence to confirm their effectiveness in treating symptoms of HD specifically are incomplete. As the disease progresses the ability to care for oneself declines, and carefully managed multidisciplinary caregiving becomes increasingly necessary. Although there have been relatively few studies of exercises and therapies that help rehabilitate cognitive symptoms of HD, there is some evidence for the usefulness of physical therapy, occupational therapy, and speech therapy. An association between caffeine intake and earlier age of onset in Huntington's disease has been found but, since this finding was based on retrospective questionnaire data rather than a blinded, randomized trial or case-control study, this work is a poor basis for guiding lifestyle decisions.
Currently, no treatment slows the neurodegeneration in any of the neuroacanthocytosis disorders. Medication may be administered to decrease the involuntary movements produced by these syndromes. Antipsychotics are used to block dopamine, anticonvulsants treat seizures and botulinum toxin injections may control dystonia. Patients usually receive speech, occupational and physical therapies to help with the complications associated with movement. Sometimes, physicians will prescribe antidepressants for the psychological problems that accompany neuroacanthocytosis. Some success has been reported with Deep brain stimulation.
Mouthguards and other physical protective devices may be useful in preventing damage to the lips and tongue due to the orofacial chorea and dystonia typical of chorea acanthocytosis.
The GM1 gangliosidoses (or GM1 gangliosidos"i"s) are caused by a deficiency of beta-galactosidase, with resulting abnormal storage of acidic lipid materials in cells of the central and peripheral nervous systems, but particularly in the nerve cells.
GM1 Gangliosidoses are inherited, autosomal recessive sphingolipidoses, resulting from marked deficiency of Acid Beta Galactosidase.
There is no cure for Menkes disease. Early treatment with injections of copper supplements (in the form of acetate salts) may be of some slight benefit. Among 12 newborns who were diagnosed with MNK, 92% were alive at age 4.6. Other treatment is symptomatic and supportive. Treatments to help relieve some of the symptoms includes, pain medication, anti-seizure medication, feeding tube when necessary, and physical and occupational therapy.
Weight loss and eating difficulties due to dysphagia and other muscle discoordination are common, making nutrition management increasingly important as the disease advances. Thickening agents can be added to liquids as thicker fluids are easier and safer to swallow. Reminding the affected person to eat slowly and to take smaller pieces of food into the mouth may also be of use to prevent choking. If eating becomes too hazardous or uncomfortable, the option of using a percutaneous endoscopic gastrostomy is available. This is a feeding tube, permanently attached through the abdomen into the stomach, which reduces the risk of aspirating food and provides better nutritional management. Assessment and management by speech-language pathologists with experience in Huntington's disease is recommended.
People with Huntington's disease may see a physical therapist for non-invasive and non-medication-based ways of managing the physical symptoms. Physical therapists may implement fall risk assessment and prevention, as well as strengthening, stretching, and cardiovascular exercises. Walking aids may be prescribed as appropriate. Physical therapists also prescribe breathing exercises and airway clearance techniques with the development of respiratory problems. Consensus guidelines on physiotherapy in Huntington's disease have been produced by the European HD Network. Goals of early rehabilitation interventions are prevention of loss of function. Participation in rehabilitation programs during early to middle stage of the disease may be beneficial as it translates into long term maintenance of motor and functional performance. Rehabilitation during the late stage aims to compensate for motor and functional losses. For long-term independent management, the therapist may develop home exercise programs for appropriate people.
Additionally, an increasing number of people with Huntington’s disease are turning to palliative care, which aims to improve quality of life through the treatment of the symptoms and stress of serious illness, in addition to their other treatments.