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CHARGE syndrome

From Wikipedia, the free encyclopedia

CHARGE syndrome
"Lop ear" phenotype characteristic of a person with CHARGE syndrome, along with her cochlear implant.
SpecialtyMedical genetics Edit this on Wikidata

CHARGE syndrome (formerly known as CHARGE association) is a rare syndrome caused by a genetic disorder. First described in 1979, the acronym "CHARGE" came into use for newborn children with the congenital features of coloboma of the eye, heart defects, atresia of the nasal choanae, restricted growth and/or development, genital and/or urinary abnormalities, and ear abnormalities and deafness.[1] These features are no longer used in making a diagnosis of CHARGE syndrome, but the name remains. About two thirds of cases are due to a CHD7 mutation. CHARGE syndrome occurs only in 0.1–1.2 per 10,000 live births; as of 2009, it was the leading cause of congenital deafblindness in the US.[2]

YouTube Encyclopedic

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  • CHARGE Syndrome: An Overview
  • CHARGE Syndrome - Clinical Features
  • CHARGE Syndrome - CRASH! Medical Review Series
  • Life Expectancy for a Child with CHARGE Syndrome - Catherine Lacey Dodd
  • CHARGE & VACTERL Syndromes - Pathology, Clinical Presentation, Diagnosis & Treatment

Transcription

NARRATOR: A word is carved in stone: "Perkins." Below a gothic tower, a boy navigates with a cane. A title: "Perkins Presents: An Overview of CHARGE Syndrome with Pam Ryan." RYAN: CHARGE syndrome is a genetic disorder, and it's characterized by sensory, physical, medical, developmental problems. NARRATOR: In animation, red letters form the word "CHARGE." RYAN: The letters stand for... "C" stands for coloboma, which is an eye condition. "H" stands for heart. "A" stands for atresia choanae, which is a problem behind the nose. "R" is retardation of growth and/or development. "G" is Gastrointestinal/genital/ urinary problems, and "E" stands for ears. The name itself is an acronym. CHARGE is an acronym for a variety of conditions, but it's not necessarily the diagnostic feature anymore. We keep it because it's easy to remember for people, but the diagnostic criteria really boils down to four "C's"-- either the four major characteristics, or three major and three minor. NARRATOR: A lengthy document lists CHARGE syndrome features, involving vision, sense of smell, swallowing, ear formation, and more. RYAN: Every single condition related to CHARGE syndrome has a wide spectrum-- from very mild to very profound. The "C's" sort of define what's going on. It's the coloboma, which would lead to vision issues-- from mild to profound. And a coloboma is an incomplete formation of different parts of the eye. NARRATOR: In photos, two toddlers appear to have misshapen pupils. RYAN: It's a cleft or a hole, and depending on where that cleft or hole is, will determine vision conditions. NARRATOR: Two photos compare a healthy human retina to one with a coloboma. RYAN: If you have a cleft in your iris, your vision acuity can still be very good. But if it's further back in the eye structure, it can be more compromised. So people could have very mild vision loss or be totally blind, depending on where that cleft is. The next "C" that would determine... that would give you a physical characteristic related to CHARGE is the choanal atresia, or stenosis, and it's the bony growth behind the nose which can impact breathing. NARRATOR: In an illustration of a face in profile, a bony obstruction appears near the nose. RYAN: Often, the babies have a lot of trouble eating and breathing at the same time. NARRATOR: A photo shows an infant with a breathing tube. RYAN: Regular babies-- typical babies-- have trouble when they have a cold. They can't be having a bottle at the same time, because they can't do both. These kids, it's a chronic condition, and the atresia, which is a blockage, and stenosis, which is narrowing, often need surgical intervention when the kids are very young to open those passages so they can breathe. The next "C" is cranial nerve abnormalities. And there are several cranial nerves that are involved in these kids, which can cause a facial palsy, which can also interfere with breathing and swallowing as well as some other nerves. NARRATOR: In photos, children smile with lopsided grins; several peer through eyeglasses. In a field, a boy wears a brimmed bucket-hat on his tilted head. RYAN: The tilt of the head, hearing loss, vision, sense of smell... which can impact as kids get older-- a sense of smell can impact, because if you can't sort of smell your own body odor when you're a teenager, you could be ostracized, and that's not a nice thing. It affects, also, the entire swallowing mechanisms, so many kids really are dependant on G-tubes because they can't swallow food. NARRATOR: A thin tube leads directly into a child's stomach under his shirt. A newborn baby lies in bed with sensors on his bare chest and tubes in his stomach and nose. RYAN: The fourth "C", which is the characteristic CHARGE ear... NARRATOR: In photos of ears, one lacks a lobe; another has a split outer rim. RYAN: ...the ears are very unusual looking, and for boys particularly, it can be a little more problematic, because they don't have hair to cover their ears. And the ears can be very malformed, or maybe one is malformed and one is not. NARRATOR: A boy smiles, his ears protruding below the bottom of his baseball cap. Wearing a hearing-aid, another boy concentrates on slicing a strawberry. RYAN: Usually, this part of the ear-- this part that we can see-- is very weak, so even their hearing aids will not stay on, which can be a problem if hearing is something that they can use. And then, internally, it also signals a problem. NARRATOR: On a running-track striped with white lines, a woman stands with her arms stretched out. Several youngsters mimic her stance. In another picture, a mom holds her son as he picks a fruit from a tree. RYAN: These kids have pretty specific balance issues that can be overcome, but when they're very young can be very traumatic, because they're fearful if they're not seeing well, and they can't hear well, and they can't stand up without falling over, then movement has very little motivation for them. NARRATOR: On a SURFING simulator, a boy stands sideways on a mounted surfboard. Fade to black. A title: "Early Challenges of CHARGE." RYAN: If you go right back to that birth process, there's a whole lot of medical stuff that has to be dealt with immediately, and that is life and death. And so initially, as parents, you're faced with, "Is my child going to live?" If that child is born with a cleft lip or palate, that's going to take time. You've got to repair that. NARRATOR: A baby lies asleep in bed. A close view reveals a puffy, wide nose and a malformed upper lip. RYAN: If the child has the blockage and they're not breathing; if the child has a heart condition and they're not able to illicit that first cry or they're very weak and they're maybe small babies, despite maybe being a normal-sized pregnancy. There's all those medical things that have to be faced first. And, "Is my child going to live?" And then, over time and over many, many, many surgeries for a lot of these kids, life takes on a rhythm, but the kids may go home with oxygen, with a trach, with a G-tube, and so then there's home care that has a huge impact. NARRATOR: In photos, a boy wears a red plastic fireman's hat; and a girl giggles, with leads from a thin tube extending into her nostrils. In a field, a boy dressed in a Red Sox baseball shirt tilts his head; and a child plays on a carpeted stairway, lying upside-down. RYAN: Okay, so maybe we move, then, to three years old, and the trach has come out. G-tube might still be in place. Kids pulling up, and parents start to see that maybe it's going to be okay. "Maybe my child is going to walk. "Maybe he's going to sit up by himself. He's starting to look around." NARRATOR: A rosy-cheeked toddler gazes up at an adult. A boy wearing headphones sits in an easy-chair, his bandaged arm resting on a pillow. He gives a thumb's-up. RYAN: So I think those increments can be small, but once all the medical things are taken care of, then there's some light at the end of the tunnel, and they start thinking, "Hmm, maybe school is in the cards for my child." NARRATOR: Fade to black. A title: "Perkins School for the Blind: Educational Outlook with CHARGE." RYAN: There's a huge percentage of children who are functioning at their grade level, and then there's many who aren't. Again, it's a wide spectrum of functioning abilities. From normal-- some... there are some gifted children with CHARGE-- to very profoundly intellectually impaired children, which will certainly determine the course of their development and their placement in school. NARRATOR: In photos, a boy gazes through a window. In a grassy yard, a teacher holds a book open for a student. His brimmed cap shades his eyes from the sun. In a classroom, several boys draw pictures. One uses a slanted work-surface, with a metal clip that holds his paper in place. Another boy leans over his drawing, which lies flat on a desk. RYAN: There are children who, given vision, hearing, everything else, once they get going, can do very well in school-- learn to read, learn to write, do math, do all the things that you would expect in school. And then there are those children that have great difficulty learning, and their programs, while they may be working on some academic task-- things that we think of as counting, telling time, learning about life-- but may become more functional in nature, but that's related to their life, their schedule. TEACHER: Which job are you going to do? NARRATOR: In a kitchen, a boy checks a picture display, then signs to his teacher. RYAN: There are students who maybe are using sign language and not speech, and might need back up from pictures, and if your vision is compromised, making sure that those pictures are big enough and that your sign language is close enough, or if you need even more, that somebody can sign in your hands to make sure everything is very clear for you. In a classroom, that can be very difficult for a teacher. NARRATOR: In the kitchen, a teacher signs to a student. He checks the picture display on the refrigerator, then sets a saucepan on a stovetop. Another boy cuts a loaf of bread with a knife. RYAN: Having support through the educational team, having somebody on that educational team-- a consultant who understands what CHARGE is and what the ramifications are on an educational program-- becomes the link in the chain so that that person can talk about communication needs; the person can talk about classroom access and how that can best be achieved with a student. NARRATOR: Fade to black. A logo: Perkins School: All We See is Possibility. A title: "CHARGE and Emotional Issues." RYAN: They may not have different emotional issues, but they may manifest differently. NARRATOR: In a photo, a boy sits on a grassy yard on a school campus. His teacher points to a page in an open book. RYAN: If the kids-- and most of the kids, as they certainly mature-- start to show signs of what would be considered obsessive-compulsive disorder, anxiety disorder, so they're a little more nervous. They're a little more anxious. NARRATOR: In the kitchen, a boy uses his finger to trace a rectangle in the air over a countertop, then sets down a cutting board. RYAN: If they've got obsessive-compulsive disorder, one sort of can lead to the next, and everything's not in place, and if everything's in place, then my anxiety level is down. I can move forward with the classroom. But if something's askew, it's off. So their behavior manifests differently. It can manifest as obsessive-compulsive disorder. It can manifest as anxiety. It can manifest as just striking out. NARRATOR: In a photo, four smiling young people stand side-by-side in playful poses. One holds his fingers in a "V" behind another's head. A girl wears a hat made of twisted balloons and a t-shirt imprinted with the word "Angel." RYAN: I think, for the kids certainly who are higher functioning in terms of their cognition, their emotional life might be a little more complicated, because they're looking... they're seeing other kids making fun of, perhaps, their face which may be more unusual looking, or commenting on their ears which may be malformed. Maybe the boys, especially, could be being picked on in gym class, because they're smaller, and not, you know, they're not the kids that are going out for the football team. They usually don't have the height, nor do they have, often, they strength or the physical stamina for those kinds of sports. So those are the kids that are being excluded on that end, as well. And I think it's very hard, often, in public school for kids to make friends. NARRATOR: Fade to black. A title appears: "Resources for CHARGE Syndrome." RYAN: The CHARGE website-- the family website-- is remarkable for those kinds of issues. Parents find the website, and they say, "Thank God; there's another parent here." And then they find out there's, you know, 700 parents. NARRATOR: A website address: CHARGEsyndrome.org. The website offers history, resources, memberships, and contacts. RYAN: There are lots of pieces of information on the website, and one of them is a packet that many people here were just involved with, called, "Welcoming Your CHARGE Child to a Public School Classroom," and there's lots of information about vision, hearing, behavior, structure, and how those things can help make a program work well for a student. There's a CHARGE listserv, and it's mostly mothers. But it's huge. It's an international listserv, and the things that they talk about there are the very small successes that they never thought they would see, so they are great encouragement to each other. NARRATOR: A smiling woman cradles an infant in her arms. RYAN: As a non-parent on that list, it helps me enormously when I meet a new parent, to be able to say, "You know, if you "go to that listserv, those other mothers are going to know exactly what you're talking about." This is what I've learned from them, so I can share that information with them, you know, "It's going to be okay." NARRATOR: A woman and a girl lean their heads together as they pose for a picture. Fade to black. A title: "Long Term Outlook for CHARGE Syndrome." RYAN: Given all the right set of circumstances-- the right supports, the medical health is... their medical care is dealt with and they've got people right behind them, there is great optimism that is possible. The kids are doing well. We have kids, they came to us-- and not just us, but around the world-- who were barely able to walk, and now they're on scooters and roller skates. These are kids that nobody ever thought were going to stand up because their balance was so poor. NARRATOR: In photos, a boy wearing a red fireman's hat grins. In a swimming pool, a boy floats with inflated water-wings wrapped around his arms. A girl wearing a fireman's hat squirts water from a hose. A toddler crawls in a round plastic pool filled with colorful balls. RYAN: If children get through those very early medical times, those trying times for parents when they're in the hospital for a long time... NARRATOR: A woman and a girl both hold up two fingers, making "V" symbols. RYAN: ...the kids can do really well, and once they've gotten beyond that and their health conditions are resolved, repaired, they're beyond them, there is no specific set life expectancy. There are people in their 50s, there are people in their 40s, there are young people off to college. NARRATOR: A photo of a half-dozen adults fades into a photo of youngsters, who lean on each other as they pose. One gives a thumbs-up. RYAN: One young man still has G-tube. He's one of the guys who's done really, really well. He's 24, and he got a full scholarship to a university in California. So the possibilities for some of these kids are just endless. NARRATOR: In the kitchen, a boy shakes hands with his teacher, then makes an "Okay" gesture to us. Fade to black.

Genetics

CHARGE syndrome was formerly referred to as CHARGE association, which indicates a non-random pattern of congenital anomalies that occurs together more frequently than one would expect on the basis of chance, but for which a common cause has not been identified. Very few people with CHARGE will have 100% of its known features. In 2004, mutations on the CHD7 gene (located on Chromosome 8) were found in 10 of 17 patients in the Netherlands, making CHARGE an official syndrome.[3] A 2006 US study of 110 individuals with CHARGE syndrome showed that 60% of those tested had a mutation of the CHD7 gene.[4]

In 2010, a review of 379 clinically diagnosed cases of CHARGE syndrome, in which CHD7 mutation testing was undertaken found that 67% of cases were due to a CHD7 mutation.[5]

Diagnosis

The diagnosis of CHARGE syndrome is often difficult, because it is rare. The syndrome spans many disciplines, and as such, the symptoms may be recognized by a pediatrician, family medicine physician, oral and maxillofacial surgeon, ENT specialist, ophthalmologist, endocrinologist, cardiologist, urologist, developmental specialist, radiologist, geneticist, physiotherapist, occupational therapist, speech therapist, or orthopedic specialist.[6]

Signs

Although genetic testing positively identifies nearly two thirds of children with CHARGE syndrome, diagnosis is still largely clinical.[6] The following signs were originally identified in children with this syndrome, but are no longer used to make the diagnosis alone.

Genetic testing

Genetic testing for CHARGE syndrome involves specific genetic testing for the CHD7 gene. The test is available[when?] at most major genetic testing laboratories. Insurance companies sometimes do not pay for such genetic tests, though this is changing rapidly as genetic testing is becoming standard across all aspects of medicine. CHARGE syndrome is a clinical diagnosis, which means genetic testing is not required in order to make the diagnosis. Rather, the diagnosis can be made based on clinical features alone.

Screening other organ systems

Once the diagnosis is made based on clinical signs, it is important to investigate other body systems that may be involved. For example, if the diagnosis is made based on the abnormal appearance of the ears and developmental delay, it is important to check the child's hearing, vision, heart, nose, and urogenital system. Ideally, every child newly diagnosed with CHARGE syndrome should have a complete evaluation by an ENT specialist, audiologist, ophthalmologist, pediatric cardiologist, developmental therapist, and pediatric urologist.

Recent research led by Yu Liang from Shijiazhuang Fourth Hospital and Sijie He from BGI Genomics, highlighted the use of prenatal ultrasound to detect CHARGE syndrome. Key findings indicated the difficulty in diagnosing CHARGE syndrome without genetic testing,[7] as mutations in the CHD7 gene are not always listed in public databases.[8] and predicted to be deleterious by CADD [9] and MutationTaster.[10]

Phenotypic variability further complicates diagnosis, with no clear correlation between mutation severity and clinical presentation. Trio-WES analysis confirmed a de novo mutation in the newborn, emphasizing the importance of early diagnosis for effective management. The study underscores the significance of early prenatal diagnosis through ultrasound examinations and specialized genetic testing.[7] This approach facilitates timely interventions and enhances understanding of rare genetic conditions, improving diagnostic protocols for CHARGE syndrome and similar disorders.

Treatment

Children with CHARGE syndrome may have a number of life-threatening medical conditions; with advances in medical care, these children can survive and can thrive with the support of a multidisciplinary team of medical professionals. Therapies and education must take into consideration hearing impairment, vision problems, and any others. Early intervention, such as occupational, speech-language, and physical therapy, to improve static posture, ambulation, and self-care skills is important. The intelligence of children with multiple health impairments, such as combined deafblindness, can be underestimated in the absence of early intervention.[11]

Education

Children with CHARGE syndrome will vary greatly in their abilities in the classroom: some may need little support, while some may require full-time support and individualized programs. Taking each of the various affected body systems into account is vital to the success of the child in the educational setting.

An important step in dealing with abnormal behavior is understanding why it is occurring and helping the child learn more appropriate methods of communicating.[12]

Epidemiology

The incidence is estimated to range from 0.1 to 1.2 per 10,000 live births, though the true incidence is unknown.[13] As of 2005, the highest prevalence was found in Canada and estimated at 1 in 8,500 live births.[14]

History

B.D. Hall first described the CHARGE association in a 1979 journal paper of about 17 children who had been born with choanal atresia.[15] During the same year, H.M. Hittner described 10 children who had choanal atresia as well as coloboma, congenital heart defect, and hearing loss.[16] Using both coloboma or choanal atresia and some of the other related characteristic malformations, R. A. Pagon first coined the acronym CHARGE in 1981 to emphasize that this cluster of associated malformations occurred together.[1] It came to be recognised[when?] as a syndrome within the umbrella of the CHARGE association, a set of apparently random signs occurring together. Since the signs seen in CHARGE are caused by a genetic anomaly, its name was eventually[when?] changed to 'CHARGE syndrome'.[citation needed]

The CHARGE Syndrome Foundation, formally incorporated in 1993,[17] is a US-based organization for individuals with CHARGE syndrome, families, researchers, and clinicians to further research and scientific knowledge about CHARGE Syndrome. The Foundation holds a biennial international conference that was first held in 1993.[18]

See also

References

  1. ^ a b Pagon RA, Graham JM, Zonana J, Yong SL (August 1981). "Coloboma, congenital heart disease, and choanal atresia with multiple anomalies: CHARGE association". The Journal of Pediatrics. 99 (2): 223–227. doi:10.1016/S0022-3476(81)80454-4. PMID 6166737.
  2. ^ "The 2008 National Child Count of Children and Youth who are Deaf-Blind" (PDF). The National Consortium on Deaf-Blindness. 2009. p. 30. Archived from the original (PDF) on 2012-03-15.
  3. ^ Vissers LE, van Ravenswaaij CM, Admiraal R, Hurst JA, de Vries BB, Janssen IM, et al. (September 2004). "Mutations in a new member of the chromodomain gene family cause CHARGE syndrome". Nature Genetics. 36 (9): 955–957. doi:10.1038/ng1407. PMID 15300250.
  4. ^ Lalani SR, Safiullah AM, Fernbach SD, Harutyunyan KG, Thaller C, Peterson LE, et al. (February 2006). "Spectrum of CHD7 mutations in 110 individuals with CHARGE syndrome and genotype-phenotype correlation". American Journal of Human Genetics. 78 (2): 303–314. doi:10.1086/500273. PMC 1380237. PMID 16400610.
  5. ^ Zentner GE, Layman WS, Martin DM, Scacheri PC (March 2010). "Molecular and phenotypic aspects of CHD7 mutation in CHARGE syndrome". American Journal of Medical Genetics. Part A. 152A (3): 674–686. doi:10.1002/ajmg.a.33323. PMC 2918278. PMID 20186815.
  6. ^ a b "Genetics: Diagnosis, Testing & Recurrence | Charge Syndrome Foundation". Charge Syndrome Foundation | A better world for people with CHARGE Syndrome. 2016-06-20. Retrieved 2022-02-20.
  7. ^ a b Liang Y, He S, Yang L, Li T, Zhao L, Sun CX (March 2024). "CHARGE syndrome with early fetal ear abnormalities: A case report". Clinical Case Reports. 12 (3): e8670. doi:10.1002/ccr3.8670. PMC 10948373. PMID 38505478. Lay summary in: "Study Reveals How Fetal Ear Shape Could Signal Rare Genetic Condition". BGI Insight. Shenzhen, China. 2 May 2024.
  8. ^ "Genome Aggregation Database".
  9. ^ "CADD".
  10. ^ "MutationTaster".
  11. ^ "Therapies | Charge Syndrome Foundation". Charge Syndrome Foundation | A better world for people with CHARGE Syndrome. 2016-05-31. Retrieved 2022-02-20.
  12. ^ "Education | Charge Syndrome Foundation". Charge Syndrome Foundation | A better world for people with CHARGE Syndrome. Retrieved 2022-02-20.
  13. ^ Blake KD, Prasad C (September 2006). "CHARGE syndrome". Orphanet Journal of Rare Diseases. 1: 34. doi:10.1186/1750-1172-1-34. PMC 1586184. PMID 16959034.
  14. ^ Issekutz KA, Graham JM, Prasad C, Smith IM, Blake KD (March 2005). "An epidemiological analysis of CHARGE syndrome: preliminary results from a Canadian study". American Journal of Medical Genetics. Part A. 133A (3): 309–317. doi:10.1002/ajmg.a.30560. PMID 15637722. S2CID 23647735.
  15. ^ Hall BD (September 1979). "Choanal atresia and associated multiple anomalies". The Journal of Pediatrics. 95 (3): 395–398. doi:10.1016/S0022-3476(79)80513-2. PMID 469662.
  16. ^ Hittner HM, Hirsch NJ, Kreh GM, Rudolph AJ (1979). "Colobomatous microphthalmia, heart disease, hearing loss, and mental retardation--a syndrome". Journal of Pediatric Ophthalmology and Strabismus. 16 (2): 122–128. doi:10.3928/0191-3913-19790301-10. PMID 458518.
  17. ^ "Foundation History | Charge Syndrome Foundation". Charge Syndrome Foundation | A better world for people with CHARGE Syndrome. Retrieved 2021-12-09.
  18. ^ "Conferences | Charge Syndrome Foundation". Charge Syndrome Foundation | A better world for people with CHARGE Syndrome. Retrieved 2021-12-09.

External links

This page was last edited on 1 June 2024, at 03:42
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