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Neurodevelopmental disorder with microcephaly, epilepsy, and brain atrophy(NEDMEBA)

MedGen UID:
1637443
Concept ID:
C4693390
Disease or Syndrome
Synonyms: NEDMEBA; NEURODEVELOPMENTAL DISORDER WITH MICROCEPHALY, EPILEPSY, AND BRAIN ATROPHY
 
Gene (location): TRAPPC6B (14q21.1)
 
Monarch Initiative: MONDO:0060640
OMIM®: 617862

Definition

NEDMEBA is an autosomal recessive neurodegenerative disorder characterized by global developmental delay, severe intellectual disability with poor or absent speech and autistic stereotypic behaviors, microcephaly, early-onset generalized seizures, and hypotonia (summary by Marin-Valencia et al., 2018). [from OMIM]

Clinical features

From HPO
Short stature
MedGen UID:
87607
Concept ID:
C0349588
Finding
A height below that which is expected according to age and gender norms. Although there is no universally accepted definition of short stature, many refer to "short stature" as height more than 2 standard deviations below the mean for age and gender (or below the 3rd percentile for age and gender dependent norms).
Dysphagia
MedGen UID:
41440
Concept ID:
C0011168
Disease or Syndrome
Difficulty in swallowing.
Intellectual disability, severe
MedGen UID:
48638
Concept ID:
C0036857
Mental or Behavioral Dysfunction
Severe mental retardation is defined as an intelligence quotient (IQ) in the range of 20-34.
Motor stereotypies
MedGen UID:
21318
Concept ID:
C0038271
Individual Behavior
Use of the same abnormal action in response to certain triggers or at random. They may be used as a way to regulate one's internal state but must otherwise have no apparent functional purpose.
Hyperreflexia
MedGen UID:
57738
Concept ID:
C0151889
Finding
Hyperreflexia is the presence of hyperactive stretch reflexes of the muscles.
Hand tremor
MedGen UID:
68689
Concept ID:
C0239842
Finding
An unintentional, oscillating to-and-fro muscle movement affecting the hand.
Hypoplasia of the corpus callosum
MedGen UID:
138005
Concept ID:
C0344482
Congenital Abnormality
Underdevelopment of the corpus callosum.
Bilateral tonic-clonic seizure
MedGen UID:
141670
Concept ID:
C0494475
Sign or Symptom
A bilateral tonic-clonic seizure is a seizure defined by a tonic (bilateral increased tone, lasting seconds to minutes) and then a clonic (bilateral sustained rhythmic jerking) phase.
Global developmental delay
MedGen UID:
107838
Concept ID:
C0557874
Finding
A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.
Cerebellar atrophy
MedGen UID:
196624
Concept ID:
C0740279
Disease or Syndrome
Cerebellar atrophy is defined as a cerebellum with initially normal structures, in a posterior fossa with normal size, which displays enlarged fissures (interfolial spaces) in comparison to the foliae secondary to loss of tissue. Cerebellar atrophy implies irreversible loss of tissue and result from an ongoing progressive disease until a final stage is reached or a single injury, e.g. an intoxication or infectious event.
Gait ataxia
MedGen UID:
155642
Concept ID:
C0751837
Sign or Symptom
A type of ataxia characterized by the impairment of the ability to coordinate the movements required for normal walking. Gait ataxia is characteirzed by a wide-based staggering gait with a tendency to fall.
Broad-based gait
MedGen UID:
167799
Concept ID:
C0856863
Finding
An abnormal gait pattern in which persons stand and walk with their feet spaced widely apart. This is often a component of cerebellar ataxia.
Delayed gross motor development
MedGen UID:
332508
Concept ID:
C1837658
Finding
A type of motor delay characterized by a delay in acquiring the ability to control the large muscles of the body for walking, running, sitting, and crawling.
Absent speech
MedGen UID:
340737
Concept ID:
C1854882
Finding
Complete lack of development of speech and language abilities.
Motor regression
MedGen UID:
478627
Concept ID:
C3276997
Finding
Loss of previously achieved motor skills, as manifested by loss of developmental motor milestones.
Ventriculomegaly
MedGen UID:
480553
Concept ID:
C3278923
Finding
An increase in size of the ventricular system of the brain.
Recurrent hand flapping
MedGen UID:
867996
Concept ID:
C4022387
Mental or Behavioral Dysfunction
A type of repetitive behavior in which the affected individual repeatedly waves the hands and/or arms rhythmically.
Delayed fine motor development
MedGen UID:
869257
Concept ID:
C4023681
Finding
A type of motor delay characterized by a delay in acquiring the ability to control the fingers and hands.
Atrophy/Degeneration affecting the brainstem
MedGen UID:
870454
Concept ID:
C4024900
Disease or Syndrome
Cerebral cortical atrophy
MedGen UID:
1646740
Concept ID:
C4551583
Disease or Syndrome
Atrophy of the cortex of the cerebrum.
Hypotonia
MedGen UID:
10133
Concept ID:
C0026827
Finding
Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.
Muscle weakness
MedGen UID:
57735
Concept ID:
C0151786
Finding
Reduced strength of muscles.
Progressive microcephaly
MedGen UID:
340542
Concept ID:
C1850456
Anatomical Abnormality
Progressive microcephaly is diagnosed when the head circumference falls progressively behind age- and gender-dependent norms.
Strabismus
MedGen UID:
21337
Concept ID:
C0038379
Disease or Syndrome
A misalignment of the eyes so that the visual axes deviate from bifoveal fixation. The classification of strabismus may be based on a number of features including the relative position of the eyes, whether the deviation is latent or manifest, intermittent or constant, concomitant or otherwise and according to the age of onset and the relevance of any associated refractive error.
Horizontal nystagmus
MedGen UID:
124399
Concept ID:
C0271385
Disease or Syndrome
Nystagmus consisting of horizontal to-and-fro eye movements.

Recent clinical studies

Etiology

Salpietro V, Maroofian R, Zaki MS, Wangen J, Ciolfi A, Barresi S, Efthymiou S, Lamaze A, Aughey GN, Al Mutairi F, Rad A, Rocca C, Calì E, Accogli A, Zara F, Striano P, Mojarrad M, Tariq H, Giacopuzzi E, Taylor JC, Oprea G, Skrahina V, Rehman KU, Abd Elmaksoud M, Bassiony M, El Said HG, Abdel-Hamid MS, Al Shalan M, Seo G, Kim S, Lee H, Khang R, Issa MY, Elbendary HM, Rafat K, Marinakis NM, Traeger-Synodinos J, Ververi A, Sourmpi M, Eslahi A, Khadivi Zand F, Beiraghi Toosi M, Babaei M, Jackson A; SYNAPS Study Group, Bertoli-Avella A, Pagnamenta AT, Niceta M, Battini R, Corsello A, Leoni C, Chiarelli F, Dallapiccola B, Faqeih EA, Tallur KK, Alfadhel M, Alobeid E, Maddirevula S, Mankad K, Banka S, Ghayoor-Karimiani E, Tartaglia M, Chung WK, Green R, Alkuraya FS, Jepson JEC, Houlden H
Am J Hum Genet 2024 Jan 4;111(1):200-210. Epub 2023 Dec 20 doi: 10.1016/j.ajhg.2023.11.012. PMID: 38118446Free PMC Article
Nouri N, Bahreini A, Nasiri J, Salehi M
Epilepsy Res 2021 Nov;177:106782. Epub 2021 Oct 5 doi: 10.1016/j.eplepsyres.2021.106782. PMID: 34695666
Giacomini T, Nuovo S, Zanni G, Mancardi MM, Cusmai R, Pepi C, Bertini E, Valente EM, Battini R, Ferrari A, Romaniello R, Zucca C, Borgatti R, Uccella S, Severino M, Striano P, Pistorio A, Prato G, De Grandis E, Nobili L, Pisciotta L
Eur J Paediatr Neurol 2021 Mar;31:61-69. Epub 2021 Feb 19 doi: 10.1016/j.ejpn.2021.02.006. PMID: 33640666
Vigdorovich N, Ben-Sira L, Blumkin L, Precel R, Nezer I, Yosovich K, Cross Z, Vanderver A, Lev D, Lerman-Sagie T, Zerem A
Am J Med Genet A 2020 Jan;182(1):93-103. Epub 2019 Oct 17 doi: 10.1002/ajmg.a.61389. PMID: 31622028
Seltzer LE, Paciorkowski AR
Am J Med Genet C Semin Med Genet 2014 Jun;166C(2):140-55. Epub 2014 May 16 doi: 10.1002/ajmg.c.31400. PMID: 24839169

Diagnosis

Maroofian R, Kaiyrzhanov R, Cali E, Zamani M, Zaki MS, Ferla M, Tortora D, Sadeghian S, Saadi SM, Abdullah U, Karimiani EG, Efthymiou S, Yeşil G, Alavi S, Al Shamsi AM, Tajsharghi H, Abdel-Hamid MS, Saadi NW, Al Mutairi F, Alabdi L, Beetz C, Ali Z, Toosi MB, Rudnik-Schöneborn S, Babaei M, Isohanni P, Muhammad J, Khan S, Al Shalan M, Hickey SE, Marom D, Elhanan E, Kurian MA, Marafi D, Saberi A, Hamid M, Spaull R, Meng L, Lalani S, Maqbool S, Rahman F, Seeger J, Palculict TB, Lau T, Murphy D, Mencacci NE, Steindl K, Begemann A, Rauch A, Akbas S, Aslanger AD, Salpietro V, Yousaf H, Ben-Shachar S, Ejeskär K, Al Aqeel AI, High FA, Armstrong-Javors AE, Zahraei SM, Seifi T, Zeighami J, Shariati G, Sedaghat A, Asl SN, Shahrooei M, Zifarelli G, Burglen L, Ravelli C, Zschocke J, Schatz UA, Ghavideldarestani M, Kamel WA, Van Esch H, Hackenberg A, Taylor JC, Al-Gazali L, Bauer P, Gleeson JJ, Alkuraya FS, Lupski JR, Galehdari H, Azizimalamiri R, Chung WK, Baig SM, Houlden H, Severino M
Brain 2023 Dec 1;146(12):5031-5043. doi: 10.1093/brain/awad257. PMID: 37517035Free PMC Article
Nouri N, Bahreini A, Nasiri J, Salehi M
Epilepsy Res 2021 Nov;177:106782. Epub 2021 Oct 5 doi: 10.1016/j.eplepsyres.2021.106782. PMID: 34695666
Giacomini T, Nuovo S, Zanni G, Mancardi MM, Cusmai R, Pepi C, Bertini E, Valente EM, Battini R, Ferrari A, Romaniello R, Zucca C, Borgatti R, Uccella S, Severino M, Striano P, Pistorio A, Prato G, De Grandis E, Nobili L, Pisciotta L
Eur J Paediatr Neurol 2021 Mar;31:61-69. Epub 2021 Feb 19 doi: 10.1016/j.ejpn.2021.02.006. PMID: 33640666
Fallahi S, Rostami A, Nourollahpour Shiadeh M, Behniafar H, Paktinat S
J Gynecol Obstet Hum Reprod 2018 Mar;47(3):133-140. Epub 2017 Dec 8 doi: 10.1016/j.jogoh.2017.12.003. PMID: 29229361
Seltzer LE, Paciorkowski AR
Am J Med Genet C Semin Med Genet 2014 Jun;166C(2):140-55. Epub 2014 May 16 doi: 10.1002/ajmg.c.31400. PMID: 24839169

Therapy

Borlot F, Abushama A, Morrison-Levy N, Jain P, Puthenveettil Vinayan K, Abukhalid M, Aldhalaan HM, Almuzaini HS, Gulati S, Hershkovitz T, Konanki R, Lingappa L, Luat AF, Shafi S, Tabarki B, Thomas M, Yoganathan S, Alfadhel M, Arya R, Donner EJ, Ehaideb SN, Gowda VK, Jain V, Madaan P, Myers KA, Otsubo H, Panda P, Sahu JK, Sampaio LPB, Sharma S, Simard-Tremblay E, Zak M, Whitney R
Epilepsia 2020 Apr;61(4):679-692. Epub 2020 Mar 13 doi: 10.1111/epi.16480. PMID: 32167590
Fichera M, Failla P, Saccuzzo L, Miceli M, Salvo E, Castiglia L, Galesi O, Grillo L, Calì F, Greco D, Amato C, Romano C, Elia M
Hum Genet 2019 Feb;138(2):187-198. Epub 2019 Jan 17 doi: 10.1007/s00439-019-01972-3. PMID: 30656450
Yin X, Tang B, Mao X, Peng J, Zeng S, Wang Y, Jiang H, Li N
J Hum Genet 2018 Sep;63(9):971-980. Epub 2018 Jun 18 doi: 10.1038/s10038-018-0478-z. PMID: 29915213
Motobayashi M, Nishimura-Tadaki A, Inaba Y, Kosho T, Miyatake S, Niimi T, Nishimura T, Wakui K, Fukushima Y, Matsumoto N, Koike K
Am J Med Genet A 2012 Apr;158A(4):861-8. Epub 2012 Mar 9 doi: 10.1002/ajmg.a.35235. PMID: 22407754
Singhi P, Ray M
Brain Dev 2005 Mar;27(2):135-40. doi: 10.1016/j.braindev.2003.10.007. PMID: 15668054

Prognosis

Giacomini T, Nuovo S, Zanni G, Mancardi MM, Cusmai R, Pepi C, Bertini E, Valente EM, Battini R, Ferrari A, Romaniello R, Zucca C, Borgatti R, Uccella S, Severino M, Striano P, Pistorio A, Prato G, De Grandis E, Nobili L, Pisciotta L
Eur J Paediatr Neurol 2021 Mar;31:61-69. Epub 2021 Feb 19 doi: 10.1016/j.ejpn.2021.02.006. PMID: 33640666
Mukherjee K, Patel PA, Rajan DS, LaConte LEW, Srivastava S
Mol Genet Genomic Med 2020 Oct;8(10):e1426. Epub 2020 Jul 21 doi: 10.1002/mgg3.1426. PMID: 32696595Free PMC Article
Fichera M, Failla P, Saccuzzo L, Miceli M, Salvo E, Castiglia L, Galesi O, Grillo L, Calì F, Greco D, Amato C, Romano C, Elia M
Hum Genet 2019 Feb;138(2):187-198. Epub 2019 Jan 17 doi: 10.1007/s00439-019-01972-3. PMID: 30656450
Hartley JN, Simard LR, Ly V, Del Bigio MR, Frosk P
Am J Med Genet A 2019 Feb;179(2):206-218. Epub 2018 Dec 17 doi: 10.1002/ajmg.a.60690. PMID: 30556349
Alhaddad B, Schossig A, Haack TB, Kovács-Nagy R, Braunisch MC, Makowski C, Senderek J, Vill K, Müller-Felber W, Strom TM, Krabichler B, Freisinger P, Deshpande C, Polster T, Wolf NI, Desguerre I, Wörmann F, Rötig A, Ahting U, Kopajtich R, Prokisch H, Meitinger T, Feichtinger RG, Mayr JA, Jungbluth H, Hubmann M, Zschocke J, Distelmaier F, Koch J
Neuropediatrics 2018 Oct;49(5):330-338. Epub 2018 Jun 25 doi: 10.1055/s-0038-1661396. PMID: 29940663

Clinical prediction guides

Maroofian R, Kaiyrzhanov R, Cali E, Zamani M, Zaki MS, Ferla M, Tortora D, Sadeghian S, Saadi SM, Abdullah U, Karimiani EG, Efthymiou S, Yeşil G, Alavi S, Al Shamsi AM, Tajsharghi H, Abdel-Hamid MS, Saadi NW, Al Mutairi F, Alabdi L, Beetz C, Ali Z, Toosi MB, Rudnik-Schöneborn S, Babaei M, Isohanni P, Muhammad J, Khan S, Al Shalan M, Hickey SE, Marom D, Elhanan E, Kurian MA, Marafi D, Saberi A, Hamid M, Spaull R, Meng L, Lalani S, Maqbool S, Rahman F, Seeger J, Palculict TB, Lau T, Murphy D, Mencacci NE, Steindl K, Begemann A, Rauch A, Akbas S, Aslanger AD, Salpietro V, Yousaf H, Ben-Shachar S, Ejeskär K, Al Aqeel AI, High FA, Armstrong-Javors AE, Zahraei SM, Seifi T, Zeighami J, Shariati G, Sedaghat A, Asl SN, Shahrooei M, Zifarelli G, Burglen L, Ravelli C, Zschocke J, Schatz UA, Ghavideldarestani M, Kamel WA, Van Esch H, Hackenberg A, Taylor JC, Al-Gazali L, Bauer P, Gleeson JJ, Alkuraya FS, Lupski JR, Galehdari H, Azizimalamiri R, Chung WK, Baig SM, Houlden H, Severino M
Brain 2023 Dec 1;146(12):5031-5043. doi: 10.1093/brain/awad257. PMID: 37517035Free PMC Article
Guerrini R, Mei D, Kerti-Szigeti K, Pepe S, Koenig MK, Von Allmen G, Cho MT, McDonald K, Baker J, Bhambhani V, Powis Z, Rodan L, Nabbout R, Barcia G, Rosenfeld JA, Bacino CA, Mignot C, Power LH, Harris CJ, Marjanovic D, Møller RS, Hammer TB; DDD Study, Keski Filppula R, Vieira P, Hildebrandt C, Sacharow S; Undiagnosed Diseases Network, Maragliano L, Benfenati F, Lachlan K, Benneche A, Petit F, de Sainte Agathe JM, Hallinan B, Si Y, Wentzensen IM, Zou F, Narayanan V, Matsumoto N, Boncristiano A, la Marca G, Kato M, Anderson K, Barba C, Sturiale L, Garozzo D, Bei R; ATP6V1A collaborators, Masuelli L, Conti V, Novarino G, Fassio A
Brain 2022 Aug 27;145(8):2687-2703. doi: 10.1093/brain/awac145. PMID: 35675510Free PMC Article
Musante L, Faletra F, Meier K, Tomoum H, Najarzadeh Torbati P, Blair E, North S, Gärtner J, Diegmann S, Beiraghi Toosi M, Ashrafzadeh F, Ghayoor Karimiani E, Murphy D, Murru FM, Zanus C, Magnolato A, La Bianca M, Feresin A, Girotto G, Gasparini P, Costa P, Carrozzi M
Am J Med Genet A 2022 Sep;188(9):2652-2665. Epub 2022 Jun 7 doi: 10.1002/ajmg.a.62852. PMID: 35670379Free PMC Article
Majethia P, Do Rosario MC, Kaur P, Karanvir, Shankar R, Sharma S, Siddiqui S, Shukla A
Ann Hum Genet 2022 Mar;86(2):94-101. Epub 2021 Dec 8 doi: 10.1111/ahg.12452. PMID: 34878169Free PMC Article
Nouri N, Bahreini A, Nasiri J, Salehi M
Epilepsy Res 2021 Nov;177:106782. Epub 2021 Oct 5 doi: 10.1016/j.eplepsyres.2021.106782. PMID: 34695666

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