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<span>Manitoba oculotrichoanal syndrome</span>
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<h1>Manitoba oculotrichoanal syndrome</h1>
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<h2>Description</h2>
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<section><div class="mp-content"><p>Manitoba oculotrichoanal syndrome is a condition involving several characteristic physical features, particularly affecting the eyes (oculo-), hair (tricho-), and anus (-anal).</p><p>People with Manitoba oculotrichoanal syndrome have widely spaced eyes (<a class="image-modal" data-alt="Photograph of the face of a child with widely spaced eyes." data-caption="A boy with widely spaced eyes." data-credit="Elements of Morphology, National Human Genome Research Institute" data-filepath="images/PX0001SG_PRESENTATION.jpeg" data-imgtype="genetics" data-pix="PX0001SG" data-sourceurl="https://elementsofmorphology.nih.gov/index.cgi?tid=71d9f1be67c7f8b6" data-title="Widely spaced eyes (hypertelorism)" href="https://medlineplus.gov/images/PX0001SG_PRESENTATION.jpeg" id="PX0001SG_1" title="Show image">hypertelorism<img alt="" aria-hidden="true" class="image-modal-icon" src="https://medlineplus.gov/css/img/icon_camera_small.png"/></a>). They may also have other eye abnormalities including small eyes (<a data-pid="15583" href="https://medlineplus.gov/genetics/condition/microphthalmia/">microphthalmia</a>), a notched or partially absent upper eyelid (upper eyelid coloboma), eyelids that are attached to the front surface of the eye (corneopalpebral synechiae), or eyes that are completely covered by skin and usually malformed (<a class="image-modal" data-alt="Photograph of the face of a baby with cryptophthalmos." data-caption="Cryptophthalmos secondary to skin covering the lids and palpebral fissures" data-credit="Elements of Morphology, National Human Genome Research Institute" data-filepath="images/PX0001OG_PRESENTATION.jpeg" data-imgtype="genetics" data-pix="PX0001OG" data-sourceurl="https://elementsofmorphology.nih.gov/index.cgi?tid=339585ad3ac88686" data-title="Cryptophthalmos" href="https://medlineplus.gov/images/PX0001OG_PRESENTATION.jpeg" id="PX0001OG_3" title="Show image">cryptophthalmos<img alt="" aria-hidden="true" class="image-modal-icon" src="https://medlineplus.gov/css/img/icon_camera_small.png"/></a>). These abnormalities may affect one or both eyes.</p><p>Individuals with Manitoba oculotrichoanal syndrome usually have abnormalities of the front hairline, such as hair growth extending from the temple to the eye on one or both sides of the face. One or both eyebrows may be completely or partially missing. Most people with this disorder also have a wide nose with a notched tip; in some cases this notch extends up from the tip so that the nose appears to be divided into two halves (<a class="image-modal" data-alt="Two photographs of the faces of babies, each with bifid nose." data-caption="" data-credit="Elements of Morphology, National Human Genome Research Institute" data-filepath="images/PX00021R_PRESENTATION.jpeg" data-imgtype="genetics" data-pix="PX00021R" data-sourceurl="https://elementsofmorphology.nih.gov/index.cgi?tid=7124d8708f2360b3" data-title="Bifid (cleft) nose" href="https://medlineplus.gov/images/PX00021R_PRESENTATION.jpeg" id="PX00021R_4" title="Show image">bifid nose<img alt="" aria-hidden="true" class="image-modal-icon" src="https://medlineplus.gov/css/img/icon_camera_small.png"/></a>).</p><p>About 20 percent of people with Manitoba oculotrichoanal syndrome have defects in the abdominal wall, such as a soft out-pouching around the belly-button (an umbilical <a class="image-modal" data-alt="Illustration of a hernia with a piece of the intestine poking through the abdominal wall into the fatty tissue." data-caption="" data-credit="BlueRingMedia/Shutterstock.com" data-filepath="images/PX0000U4_PRESENTATION.jpeg" data-imgtype="genetics" data-pix="PX0000U4" data-sourceurl="" data-title="Hernia" href="https://medlineplus.gov/images/PX0000U4_PRESENTATION.jpeg" id="PX0000U4_5" title="Show image">hernia<img alt="" aria-hidden="true" class="image-modal-icon" src="https://medlineplus.gov/css/img/icon_camera_small.png"/></a>) or an opening in the wall of the abdomen (an <a class="image-modal" data-alt="An illustration of an infant whose intestines, liver, and other organs protrude outside of the belly through the belly button. Labels noting omphalocele, covered by thin membrane (but can be ruptured), and central through umbilical ring." data-caption="" data-credit="Centers for Disease Control and Prevention" data-filepath="images/PX0000F0_PRESENTATION.jpeg" data-imgtype="genetics" data-pix="PX0000F0" data-sourceurl="https://www.cdc.gov/birth-defects/about/omphalocele.html" data-title="Omphalocele" href="https://medlineplus.gov/images/PX0000F0_PRESENTATION.jpeg" id="PX0000F0_6" title="Show image">omphalocele<img alt="" aria-hidden="true" class="image-modal-icon" src="https://medlineplus.gov/css/img/icon_camera_small.png"/></a>) that allows the abdominal organs to protrude through the navel. Another characteristic feature of Manitoba oculotrichoanal syndrome is a narrow <a class="image-modal" data-alt="Anatomy of the digestive tract; drawing shows the mouth, pharynx (throat), esophagus, stomach, small intestine, large intestine, rectum, and anus." data-caption="Anatomy of the digestive tract; drawing shows the mouth, pharynx (throat), esophagus, stomach, small intestine, large intestine, rectum, and anus." data-credit="© 2019 Terese Winslow LLC for the National Cancer Institute" data-filepath="images/PX0003L8_PRESENTATION.jpeg" data-imgtype="genetics" data-pix="PX0003L8" data-sourceurl="https://visualsonline.cancer.gov/details.cfm?imageid=12203" data-title="Digestive tract anatomy" href="https://medlineplus.gov/images/PX0003L8_PRESENTATION.jpeg" id="PX0003L8_7" title="Show image">anus<img alt="" aria-hidden="true" class="image-modal-icon" src="https://medlineplus.gov/css/img/icon_camera_small.png"/></a> (anal stenosis) or an anal opening farther forward than usual. Umbilical wall defects or anal malformations may require surgical correction. Some affected individuals also have malformations of the kidneys.</p><p>The severity of the features of Manitoba oculotrichoanal syndrome may vary even within the same family. With appropriate treatment, affected individuals generally have normal growth and development, intelligence, and life expectancy.</p></div>
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<div class="mp-exp exp-full" data-bookmark="frequency">
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<h2>Frequency</h2>
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<section><div class="mp-content"><p>Manitoba oculotrichoanal syndrome is estimated to occur in 2 to 6 in 1,000 people in a small isolated Ojibway-Cree community in northern Manitoba, Canada. Although this region has the highest incidence of the condition, it has also been diagnosed in a few people from other parts of the world.</p></div>
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<div class="mp-exp exp-full" data-bookmark="causes">
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<h2>Causes</h2>
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<section><div class="mp-content"><p>Manitoba oculotrichoanal syndrome is caused by mutations in the <i><a data-pid="18693" href="https://medlineplus.gov/genetics/gene/frem1/">FREM1</a></i> gene.</p><p>The <i>FREM1</i> gene provides instructions for making a protein that is involved in the formation and organization of basement membranes, which are thin, sheet-like structures that separate and support cells in many tissues.</p><p>The FREM1 protein is one of a group of proteins, including proteins called FRAS1 and FREM2, that interact during embryonic development as components of basement membranes. Basement membranes help anchor layers of cells lining the surfaces and cavities of the body (epithelial cells) to other embryonic tissues, including those that give rise to connective tissues such as skin and cartilage.</p><p>The <i>FREM1</i> gene mutations that have been identified in people with Manitoba oculotrichoanal syndrome delete genetic material from the <i>FREM1</i> gene or result in a premature stop signal that leads to an abnormally short FREM1 protein. These mutations most likely result in a nonfunctional protein.</p><p>Absence of functional FREM1 protein interferes with its role in embryonic basement membrane development and may also affect the location, stability, or function of the FRAS1 and FREM2 proteins. The features of Manitoba oculotrichoanal syndrome may result from the failure of neighboring embryonic tissues to fuse properly due to impairment of the basement membranes' anchoring function.</p></div>
|
||
</section>
|
||
|
||
<section>
|
||
|
||
<div class="related-genes mp-exp exp-full">
|
||
|
||
<h3>Learn more about the gene associated with Manitoba oculotrichoanal syndrome</h3>
|
||
|
||
<ul class="relatedmp">
|
||
|
||
<li><a href="https://medlineplus.gov/genetics/gene/frem1/">FREM1</a></li>
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||
|
||
|
||
</ul>
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||
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||
</div>
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||
|
||
</section>
|
||
|
||
</div>
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||
<div class="mp-exp exp-full" data-bookmark="inheritance">
|
||
<h2>Inheritance</h2>
|
||
|
||
<section><div class="mp- mp-content"><p>This condition is inherited in an <a class="image-modal" data-alt="Both parents carry one copy of a mutated gene. In the next generation, one child is affected with the condition, two children are carriers, and one is unaffected and not a carrier." data-caption="" data-credit="U.S. National Library of Medicine" data-filepath="images/PX0000A4_PRESENTATION.jpeg" data-imgtype="genetics" data-pix="PX0000A4" data-sourceurl="" data-title="Autosomal recessive inheritance" href="https://medlineplus.gov/images/PX0000A4_PRESENTATION.jpeg" id="PX0000A4_1" title="Show image">autosomal recessive pattern<img alt="" aria-hidden="true" class="image-modal-icon" src="https://medlineplus.gov/css/img/icon_camera_small.png"/></a>, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition.</p></div>
|
||
</section>
|
||
|
||
</div>
|
||
<div class="mp-exp exp-full" data-bookmark="synonyms">
|
||
<h2>Other Names for This Condition</h2>
|
||
|
||
<section>
|
||
<ul class="bulletlist">
|
||
<li>Marles Greenberg Persaud syndrome</li> <li>Marles syndrome</li> <li>Marles-Greenberg-Persaud syndrome</li> <li>MOTA</li>
|
||
</ul>
|
||
</section>
|
||
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||
</div>
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||
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||
<div class="mp-exp exp-full" data-bookmark="resources">
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||
<h2>Additional Information & Resources</h2>
|
||
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||
<section>
|
||
<div class="mp-content">
|
||
|
||
<h2>Genetic Testing Information</h2>
|
||
<ul>
|
||
|
||
<li><a href="https://www.ncbi.nlm.nih.gov/gtr/conditions/C1855425/" target="TheNewWin">Genetic Testing Registry: Oculotrichoanal syndrome</a> <span class="desc-text"><img alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc" width="25" height="16"></span></li>
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||
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||
</ul>
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||
</div>
|
||
</section>
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||
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||
<section>
|
||
<div class="mp-content">
|
||
|
||
<h2>Genetic and Rare Diseases Information Center</h2>
|
||
<ul>
|
||
|
||
<li><a href="https://rarediseases.info.nih.gov/diseases/3395/index" target="TheNewWin">Oculotrichoanal syndrome</a> <span class="desc-text"><img alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc" width="25" height="16"></span></li>
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||
|
||
</ul>
|
||
|
||
</div>
|
||
</section>
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||
|
||
<section>
|
||
<div class="mp-content">
|
||
|
||
<h2>Patient Support and Advocacy Resources</h2>
|
||
<ul>
|
||
|
||
<li><a href="https://rarediseases.org/" target="TheNewWin">National Organization for Rare Disorders (NORD)</a></li>
|
||
|
||
</ul>
|
||
|
||
</div>
|
||
</section>
|
||
|
||
<section>
|
||
<div class="mp-content">
|
||
|
||
<h2>Catalog of Genes and Diseases from OMIM</h2>
|
||
<ul>
|
||
|
||
<li><a href="https://omim.org/entry/248450" target="TheNewWin">MANITOBA OCULOTRICHOANAL SYNDROME; MOTA</a></li>
|
||
|
||
</ul>
|
||
|
||
</div>
|
||
</section>
|
||
|
||
<section>
|
||
<div class="mp-content">
|
||
|
||
<h2>Scientific Articles on PubMed</h2>
|
||
<ul>
|
||
|
||
<li><a href="https://pubmed.ncbi.nlm.nih.gov/?term=%28%28manitoba+oculotrichoanal+syndrome%5BTIAB%5D%29+OR+%28MOTA+syndrome%5BALL%5D%29%29+AND+english%5Bla%5D+AND+human%5Bmh%5D" target="TheNewWin">PubMed</a> <span class="desc-text"><img alt="From the National Institutes of Health" title="From the National Institutes of Health" src="https://medlineplus.gov/images/nih.png" class="imgdesc" width="25" height="16"></span></li>
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||
|
||
</ul>
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||
|
||
</div>
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||
</section>
|
||
|
||
</div>
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||
|
||
<div class="mp-exp exp-full" data-bookmark="references">
|
||
<h2>References</h2>
|
||
|
||
<section>
|
||
<div class="mp-content">
|
||
|
||
<ul>
|
||
|
||
<li>Li C, Marles SL, Greenberg CR, Chodirker BN, van de Kamp J, Slavotinek A,
|
||
Chudley AE. Manitoba Oculotrichoanal (MOTA) syndrome: report of eight new cases.
|
||
Am J Med Genet A. 2007 Apr 15;143A(8):853-7. doi: 10.1002/ajmg.a.31446. <a href="https://pubmed.ncbi.nlm.nih.gov/17352387" target="TheNewWin">Citation on PubMed</a></li>
|
||
|
||
|
||
<li>Li C, Slavotinek A. FREM1 Autosomal Recessive Disorders. 2008 Jul 9
|
||
[updated 2019 May 9]. In: Adam MP, Feldman J, Mirzaa GM, Pagon RA, Wallace SE,
|
||
Amemiya A, editors. GeneReviews(R) [Internet]. Seattle (WA): University
|
||
of Washington, Seattle; 1993-2025. Available from
|
||
http://www.ncbi.nlm.nih.gov/books/NBK1728/
|
||
<a href="https://pubmed.ncbi.nlm.nih.gov/20301721" target="TheNewWin">Citation on PubMed</a></li>
|
||
|
||
|
||
<li>Marles SL, Greenberg CR, Persaud TV, Shuckett EP, Chudley AE. New familial
|
||
syndrome of unilateral upper eyelid coloboma, aberrant anterior hairline pattern,
|
||
and anal anomalies in Manitoba Indians. Am J Med Genet. 1992 Apr 1;42(6):793-9.
|
||
doi: 10.1002/ajmg.1320420609. <a href="https://pubmed.ncbi.nlm.nih.gov/1554017" target="TheNewWin">Citation on PubMed</a></li>
|
||
|
||
|
||
<li>Slavotinek AM, Baranzini SE, Schanze D, Labelle-Dumais C, Short KM, Chao R,
|
||
Yahyavi M, Bijlsma EK, Chu C, Musone S, Wheatley A, Kwok PY, Marles S, Fryns JP,
|
||
Maga AM, Hassan MG, Gould DB, Madireddy L, Li C, Cox TC, Smyth I, Chudley AE,
|
||
Zenker M. Manitoba-oculo-tricho-anal (MOTA) syndrome is caused by mutations in
|
||
FREM1. J Med Genet. 2011 Jun;48(6):375-82. doi: 10.1136/jmg.2011.089631. Epub
|
||
2011 Apr 20. <a href="https://pubmed.ncbi.nlm.nih.gov/21507892" target="TheNewWin">Citation on PubMed</a> or <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4294942/" target="TheNewWin">Free article on PubMed Central</a></li>
|
||
|
||
|
||
<li>Yeung A, Amor D, Savarirayan R. Familial upper eyelid coloboma with
|
||
ipsilateral anterior hairline abnormality: two new reports of MOTA syndrome. Am J
|
||
Med Genet A. 2009 Feb 15;149A(4):767-9. doi: 10.1002/ajmg.a.32743. <a href="https://pubmed.ncbi.nlm.nih.gov/19291776" target="TheNewWin">Citation on PubMed</a></li>
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||
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||
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||
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