This study was approved by our Institutional Review Board. A disorder that includes many features of Marfan syndrome (MFS) called Loeys-Dietz syndrome (LDS) can be caused by mutations in at least 5 different genes that influence the activity of TGF-β (TGFBR1, TGFBR2, SMAD3, TGFB2, and TGFB3). If the address matches an existing account you will receive an email with instructions to reset your password. 2001 Apr 18 [Updated 2014 Jun 12]. Additional symptoms include abnormally loose or flexible joints (joint hypermobility), flat feet (pes planus), fingers that are permanently bent or “fixed” and cannot extend or straighten fully (camptodactyly or clinodactyly), and reduced extension of the elbow. Some individuals with Marfan syndrome are at risk for the early development of cataracts or glaucoma. Using facial features alone, experienced physicians correctly discriminated between subjects (patients with MFS) and controls with an overall 72.6% accuracy rate (Table 3). For example, is there a certain number or combination of facial features that yields >90% specificity? Individuals may print one hard copy of an individual disease for personal use, provided that content is unmodified and includes NORD’s copyright. Among the minor criteria for the skeletal system are facial manifestations, i.e., dolicocephaly, malar hypoplasia, enophthalmos, retrognathia, and down-slanting palpebral fissures. Such drugs help to reduce the strength and frequency of the contractions of the heart. Some affected individuals may develop widening or bulging of the sac (dura) that surrounds the spinal cord (dural ectasia). Each chromosome has a short arm designated “p” and a long arm designated “q”. In other words, an individual with facial features of MFS has a 6.9 times higher odds of having the disease than a person who truly does not have the disease, and an individual without facial features of MFS has 0.73 times the likelihood of having the disease (27% less likely to have it) than someone who truly does have the disease. We use cookies to give you the best experience on our website. There was no significant difference in the diagnostic accuracy between non-experts receiving and not receiving instructions. In summary, facial features are more specific than they are sensitive for the presence of Marfan Syndrome (MFS). Multivariate logistic regression revealed that dolicocephaly, enophthalmos, and retrognathia were all significant identifiers for the presence of MFS. Table 2 Prevalence of Marfan syndrome (MFS) associated facial features in subjects and controls overall, and in subjects by age and gender. Some individuals may not be able to tolerate these drugs and others such as those with asthma or depession may not be able to take them (contraindicated). Lippincott Williams & Wilkins. Individuals with Loeys-Dietz syndrome have skeletal and cardiovascular abnormalities. Therefore, although facial features of MFS can be used to prioritize patients for referral, for a more comprehensive evaluation, they cannot be relied upon as the sole metric for initial screening. Marfan syndrome and fibrillin disorders. In many individuals with MVP, no associated symptoms are apparent (isolated MVP). Only certain rare types of EDS include a predisposition for severe cardiovascular issues (such as vascular EDS); other types predominantly alter the skin and joints (e.g. 0000000950 00000 n After being informed that the photographs represented individuals with and without MFS, they used a four-point Likert-type scale (strongly disagree, disagree, agree, and strongly agree) to rate each photograph in terms of the degree to which they thought each of the MFS-associated facial features was present [13, 14] and indicated whether each photograph triggered a suspicion for MFS (yes or no). NORD strives to open new assistance programs as funding allows. Males have one X and one Y chromosome and females have two X chromosomes. The base of the aorta (aortic root) is the most common site of enlargement (aneurysm), but other aortic segments and even blood vessels outside of the chest can more rarely show involvement. Lancet. Individuals with Marfan syndrome may have several distinct facial features including a long, narrow skull (dolichocephaly), deep-set eyes (enophthalmos), an abnormally small jaw (micrognathia) that may be recessed farther back than normal (retrognathia), abnormally flat cheek bones (malar hypoplasia), and an abnormal downward slant to the eyes. Symptoms of the following disorders can be similar to those of Marfan syndrome. The most serious complications involve the heart and aorta, with an increased risk of mitral valve prolapse and aortic aneurysm. These include enlargement and tear of any medium to large oxygen-carrying blood vessels (arteries) throughout the body and a risk of rupture of hollow internal organs such as the intestines or pregnant uterus. Philadelphia, PA. 2003:218-9. Whitehouse Station, NJ: Merck Research Laboratories; 2003:1608-9. For information about clinical trials being conducted at the NIH Clinical Center in Bethesda, MD, contact the NIH Patient Recruitment Office: Tollfree: (800) 411-1222 TTY: (866) 411-1010 Email: [email protected], For information about clinical trials sponsored by private sources, contact: www.centerwatch.com, For information about clinical trials conducted in Europe, contact: https://www.clinicaltrialsregister.eu/. trailer However, in other cases, mitral valve prolapse can result in chest pain, abnormal heart rhythms (arrhythmias), or evidence of inadequate heart function (congestive heart failure, most often in association with prolonged and severe mitral regurgitation). 2007;60:471-5. While aortic root enlargement (aneurysm) can be seen in SGS, it is less frequent and typically less severe, when compared to MFS or LDS. Leaking heart valves are more prone to infection with bacteria. Our results are consistent with those from recent research that reported facial features have a low sensitivity, but high specificity, for MFS [16]. It is a congenital disorder, and the symptoms become more defined as the baby grows in age. Connective tissue gives strength and flexibility to the entire body, including skin, organs mainly eyes, blood vessels and heart valves, bones, joints and muscles. Unlike Marfan syndrome, the skin in Loeys-Dietz syndrome can be soft with easily visible underlying veins (translucency). The odds of correctly identifying a patient with MFS increased by 11.4 times in the presence of dolicephaly (Table 4). To avoid having the question stems themselves prompt physicians about facial features (i.e., to avoid providing clues about the specific facial features for which they were to search), we did not ask the physicians to rate the degree of each facial feature. A small subset of 80 randomly selected photographs (40 from 20 subjects and 40 from 20 controls) was then used to survey how well eight orthopaedic surgeons less experienced with individuals with MFS (non-expert physicians) were able to recognize MFS-associated facial features (Table 1). The severity of the symptoms of MFS is variable. Individuals suspected of having Marfan syndrome will usually undergo a complete skeletal examination, a heart examination including a test that uses sound waves to produce images of the heart (echocardiogram), and a specialized examination of the eyes (slit-lamp eye examination). 0000073916 00000 n Enter your email address below and we will send you the reset instructions. of patients with MFS seen during career, Highest no. Individuals with Marfan syndrome are encouraged to avoid competitive and contact sports, heavy lifting and any exercise that increases the strain on the aorta produced by rapid or vigorous beating of the heart or increased blood pressure. Those with the condition tend to be tall and thin, with long arms, legs, fingers, and toes. In the largest trial performed to date, young patients receiving β-blockers (at high dosing) or ARBs (at standard dosing) had a comparable decline in the deviation of the aortic root size from that expected for age and body size (decreasing aortic root z-score).

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