Left ventricular noncompaction
Prevalence estimates on Rare Medical Network websites are calculated based on data available from numerous sources, including US and European government statistics, the NIH, Orphanet, and published epidemiologic studies. Rare disease population data is recognized to be highly variable, and based on a wide variety of source data and methodologies, so the prevalence data on this site should be assumed to be estimated and cannot be considered to be absolutely correct.
Age of Onset
Autosomal dominant ?A pathogenic variant in only one gene copy in each cell is sufficient to cause an autosomal dominant disease
Autosomal recessive ?Pathogenic variants in both copies of each gene of the chromosome are needed to cause an autosomal recessive disease and observe the mutant phenotype
X-linked dominant ?X-linked dominant inheritance, sometimes referred to as X-linked dominance, is a mode of genetic inheritance by which a dominant gene is carried on the X chromosome.
X-linked recessive ?Pathogenic variants in both copies of a gene on the X chromosome cause an X-linked recessive disorder
Mitochondrial or multigenic ?Mitochondrial genetic disorders can be caused by changes (mutations) in either the mitochondrial DNA or nuclear DNA that lead to dysfunction of the mitochondria and inadequate production of energy.
Multigenic or multifactor ?Inheritance involving many factors, of which at least one is genetic but none is of overwhelming importance, as in the causation of a disease by multiple genetic and environmental factors.
Other Names (AKA)
LVNC; Spongy myocardium; Left ventricular hypertrabeculation
Congenital and Genetic Diseases; Heart Diseases
Left ventricular noncompaction (LVNC) is a rare heart condition. In LVNC the inside wall of the heart is spongy or grooved, instead of smooth. Signs and symptoms of LVNC vary, but may cause life-threatening abnormal heart rhythms and weakness of the heart muscle. Treatments, such as blood thinning medication and defibrillators, are available to control these heart symptoms. In rare cases, heart transplantation is needed.
Making a diagnosis for a genetic or rare disease can often be challenging. Healthcare professionals typically look at a person’s medical history, symptoms, physical exam, and laboratory test results in order to make a diagnosis. The following resources provide information relating to diagnosis and testing for this condition. If you have questions about getting a diagnosis, you should contact a healthcare professional.
- Genetic Evaluation of Cardiomyopathy A Heart Failure Society of America practice guideline.
Hershberger, et.al. Journal of Cardiac Failure; 15:83-97
Depending on the above factors, treatment might include: medications including diuretics, ACE inhibitors or Angiotensin II Receptor Blockers (ARBs), anticoagulants, and beta-blockers; an implantable cardioverter-defibrillator (ICD) or a pacemaker if an arrhythmia is present; and cardiac transplantation.
Support and advocacy groups can help you connect with other patients and families, and they can provide valuable services. Many develop patient-centered information and are the driving force behind research for better treatments and possible cures. They can direct you to research, resources, and services. Many organizations also have experts who serve as medical advisors or provide lists of doctors/clinics. Visit the group’s website or contact them to learn about the services they offer. Inclusion on this list is not an endorsement by GARD.
These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.
- The Cincinnati Children's Hospital Medical Center Web site has information on left ventricular noncompaction. Click on Cincinnati Children's Hospital Medical Center to view the page.
- The Cardiomyopathy Association has information on left ventricular noncompaction. Click on Cardiomyopathy Association to view the information page.
- The Stanford Center for Inherited Cardiovascular Disease offers patient friendly information on left ventricular noncompaction. Click on the link above to view the information page.
- The Children's Cardiomyopathy Foundation has a Web page on cardiomyopathy, which includes information on left ventricular noncompaction. Click on Children's Cardiomyopathy Foundation to view the page.
- The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
- Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
- PubMed is a searchable database of medical literature and lists journal articles that discuss Left ventricular noncompaction. Click on the link to view a sample search on this topic.
- Left ventricular noncompaction. Stanford Center for Inherited Cardiovascular Disease. http:/familyheart.stanford.edu/clinics/noncomp1.html. Accessed 12/27/2013.
- Heidi M Connolly, Christine H Attenhofer-Jost. Isolated left ventricular noncompaction. UpToDate. April 2016; https://www.uptodate.com/contents/isolated-left-ventricular-noncompaction#H19.
- Treatment. CardiomyopathyUK. https://www.cardiomyopathy.org/left-ventricular-noncompaction/treatment-7. Accessed 5/26/2016.
- Bennett CE, Freudenberger R. The Current Approach to Diagnosis and Management of Left Ventricular Noncompaction Cardiomyopathy: Review of the Literature. Cardiology Research and Practice.. Jan 2016; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4737020.