Perry syndrome is a progressive brain disease that is characterized by four major features: a pattern of movement abnormalities known as parkinsonism, psychiatric changes, weight loss, and abnormally slow breathing (hypoventilation). These signs and symptoms typically appear in a person's forties or fifties.
Parkinsonism and psychiatric changes are usually the earliest features of Perry syndrome. Signs of parkinsonism include unusually slow movements (bradykinesia), stiffness, and tremors. These movement abnormalities are often accompanied by changes in personality and behavior. The most frequent psychiatric changes that occur in people with Perry syndrome include depression, a general loss of interest and enthusiasm (apathy), withdrawal from friends and family, and suicidal thoughts. Many affected individuals also experience significant, unexplained weight loss early in the disease.
Hypoventilation is a later feature of Perry syndrome. Abnormally slow breathing most often occurs at night, causing affected individuals to wake up frequently. As the disease worsens, hypoventilation can result in a life-threatening lack of oxygen and respiratory failure.
People with Perry syndrome typically survive for about 5 years after signs and symptoms first appear. Most affected individuals ultimately die of respiratory failure or pneumonia. Suicide is another cause of death in this condition.
Perry syndrome is very rare; about 50 affected individuals have been reported worldwide.
Perry syndrome results from mutations in the DCTN1 gene. This gene provides instructions for making a protein called dynactin-1, which is involved in the transport of materials within cells. To move materials, dynactin-1 interacts with other proteins and with a track-like system of small tubes called microtubules. These components work together like a conveyer belt to move materials within cells. This transport system appears to be particularly important for the normal function and survival of nerve cells (neurons) in the brain.
Mutations in the DCTN1 gene alter the structure of dynactin-1, making it less able to attach (bind) to microtubules and transport materials within cells. This abnormality causes neurons to malfunction and ultimately die. A gradual loss of neurons in areas of the brain that regulate movement, emotion, and breathing underlies the signs and symptoms of Perry syndrome.
This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder.
In most cases, an affected person inherits the mutation from one affected parent. However, some cases result from new mutations in the gene and occur in people with no history of the disorder in their family.
Other Names for This Condition
- Parkinsonism with alveolar hypoventilation and mental depression
Additional Information & Resources
Genetic Testing Information
Genetic and Rare Diseases Information Center
Research Studies from ClinicalTrials.gov
Catalog of Genes and Diseases from OMIM
Scientific Articles on PubMed
- Chung EJ, Hwang JH, Lee MJ, Hong JH, Ji KH, Yoo WK, Kim SJ, Song HK, Lee CS, Lee MS, Kim YJ. Expansion of the clinicopathological and mutational spectrum of Perry syndrome. Parkinsonism Relat Disord. 2014 Apr;20(4):388-93. doi: 10.1016/j.parkreldis.2014.01.010. Epub 2014 Jan 22. Citation on PubMed
- Dulski J, Konno T, Wszolek Z. DCTN1-Related Neurodegeneration. 2010 Sep 30 [updated 2021 Aug 5]. In: Adam MP, Mirzaa GM, Pagon RA, Wallace SE, Bean LJH, Gripp KW, Amemiya A, editors. GeneReviews® [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2022. Available from http://www.ncbi.nlm.nih.gov/books/NBK47027/ Citation on PubMed
- Farrer MJ, Hulihan MM, Kachergus JM, Dächsel JC, Stoessl AJ, Grantier LL, Calne S, Calne DB, Lechevalier B, Chapon F, Tsuboi Y, Yamada T, Gutmann L, Elibol B, Bhatia KP, Wider C, Vilariño-Güell C, Ross OA, Brown LA, Castanedes-Casey M, Dickson DW, Wszolek ZK. DCTN1 mutations in Perry syndrome. Nat Genet. 2009 Feb;41(2):163-5. doi: 10.1038/ng.293. Epub 2009 Jan 11. Citation on PubMed or Free article on PubMed Central
- Tsuboi Y, Dickson DW, Nabeshima K, Schmeichel AM, Wszolek ZK, Yamada T, Benarroch EE. Neurodegeneration involving putative respiratory neurons in Perry syndrome. Acta Neuropathol. 2008 Feb;115(2):263-8. Epub 2007 Jun 19. Citation on PubMed
- Wider C, Dachsel JC, Farrer MJ, Dickson DW, Tsuboi Y, Wszolek ZK. Elucidating the genetics and pathology of Perry syndrome. J Neurol Sci. 2010 Feb 15;289(1-2):149-54. doi: 10.1016/j.jns.2009.08.044. Epub 2009 Sep 4. Citation on PubMed or Free article on PubMed Central
- Wider C, Dickson DW, Stoessl AJ, Tsuboi Y, Chapon F, Gutmann L, Lechevalier B, Calne DB, Personett DA, Hulihan M, Kachergus J, Rademakers R, Baker MC, Grantier LL, Sujith OK, Brown L, Calne S, Farrer MJ, Wszolek ZK. Pallidonigral TDP-43 pathology in Perry syndrome. Parkinsonism Relat Disord. 2009 May;15(4):281-6. doi: 10.1016/j.parkreldis.2008.07.005. Epub 2008 Aug 23. Citation on PubMed or Free article on PubMed Central
- Wider C, Wszolek ZK. Rapidly progressive familial parkinsonism with central hypoventilation, depression and weight loss (Perry syndrome)--a literature review. Parkinsonism Relat Disord. 2008;14(1):1-7. Epub 2007 Sep 17. Review. Citation on PubMed