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Taiwanese Journal of Obstetrics & Gynecology 53 (2014) 74e78

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Taiwanese Journal of Obstetrics & Gynecology

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Short Communication A 1.37-Mb 12p11.22ep11.21 deletion coincident with a 367-kb 22q11.2 duplication detected by array comparative genomic hybridization in an adolescent girl with autism and difficulty in self-care of menstruation

Chih-Ping Chen a,b,c,d,e,f,*, Shuan-Pei Lin b,g,h,i, Schu-Rern Chern b, Peih-Shan Wu j, Jun-Wei Su a,k, Chen-Chi Lee a, Wayseen Wang b,l

a Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan b Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan c Department of Biotechnology, Asia University, Taichung, Taiwan d School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan e Institute of Clinical and Community Health Nursing, National Yang-Ming University, Taipei, Taiwan f Department of Obstetrics and Gynecology, School of Medicine, National Yang-Ming University, Taipei, Taiwan g Department of Medicine, Mackay Medical College, New Taipei City, Taiwan h Department of Pediatrics, Mackay Memorial Hospital, Taipei, Taiwan i Mackay Junior College of Medicine, Nursing, and Management, Taipei, Taiwan j Biodesign Co. Ltd, Taipei, Taiwan k Department of Obstetrics and Gynecology, China Medical University Hospital, Taichung, Taiwan l Department of Bioengineering, Tatung University, Taipei, Taiwan

article info abstract

Article history: Objective: To present an array comparative genomic hybridization (aCGH) characterization of a 12p11.22 Accepted 21 October 2013 ep11.21 microdeletion and 22q11.2 microduplication in an adolescent girl with autism, mental retar- dation, facial dysmorphism, microcephaly, behavior problems, and an apparently balanced reciprocal Keywords: translocation of t(8;12)(q24.3;p11.2). 12p11.22ep11.21 deletion Materials and methods: A 13-year-old girl was referred to the hospital because of autism, mental retar- 22q11.2 duplication dation, and difficulty in the self-care of her menstruation. Cytogenetic analysis revealed an apparently autism balanced reciprocal translocation and a karyotype of 46,XX,t(8;12) (q24.3;p11.2)dn. The girl manifested DDX11 microcephaly, hypertelorism, flat facial profile, prominent forehead, thick scalp hair, upslanting palpebral fissures, broad nasal bridge, bulbous nose, right simian crease, bilateral clinodactyly of the fifth fingers, bilateral pes cavus, learning difficulties, mental retardation, emotional instability, cognitive impairment, behavior problems, jumping-like gaits, and autistic spectrum disorder. aCGH was performed to evaluate genomic imbalance in this patient. Results: aCGH analysis revealed a 1.37-Mb 12p11.22ep11.21 microdeletion or arr [hg 19] 12p11.22-p11.21 (30,645,008e32,014,774) Â 1 and a 367-kb 22q11.21 microduplication or arr [hg 19] 22q11.21 (18,657,470 e19,024,306) Â 3. The 1.37-Mb 12p11.22ep11.21 microdeletion encompassed 26 including IPO8, CAPRIN2, and DDX11, and the 367-kb 22q11.21 microduplication encompassed 20 genes including USP18, DGCR6, PRODH, and DGCR2. Conclusion: An apparently balanced translocation may be in fact affected by concurrent deletion and duplication in two different chromosomal regions. Our presentation provides information on diagnostic phenotype of 12p11.22ep11.21 microdeletion and 22q11.2 microduplication. Copyright Ó 2014, Taiwan Association of Obstetrics & Gynecology. Published by Elsevier Taiwan LLC. All rights reserved.

* Corresponding author. Department of Obstetrics and Gynecology, Mackay Memorial Hospital, 92, Section 2, Chung-Shan North Road, Taipei, Taiwan. E-mail address: [email protected] (C.-P. Chen).

http://dx.doi.org/10.1016/j.tjog.2013.10.037 1028-4559/Copyright Ó 2014, Taiwan Association of Obstetrics & Gynecology. Published by Elsevier Taiwan LLC. All rights reserved. C.-P. Chen et al. / Taiwanese Journal of Obstetrics & Gynecology 53 (2014) 74e78 75

Introduction Cytogenetic Array (Roche NimbleGen, Madison, WI, USA). The NimbleGen ISCA Plus Cytogenetic Array has 630,000 probes and a De novo apparently balanced reciprocal translocation may be median resolution of 15e20 kb across the entire genome, according associated with microdeletion at the breakpoints and unexpectedly to the manufacturer’s instructions. The DNA from the blood cells complex rearrangement in other , and array was extracted first. It was done by following the manufacturer’s comparative genomic hybridization (aCGH) is useful in identifying protocol of QIAamp DNA Mini kit (Qiagen, Valencia, CA, USA). The the genomic imbalance under such circumstances [1,2]. Here, we 0.5 mg extracted DNA was labeled with Cy5 dye, compared with an present our experience of detection of 12p11.22ep11.21 micro- equivalent amount of normal female genomic DNA (G1521; deletion and 22q11.2 microduplication by aCGH in a 13-year-old Promega, Madison, WI, USA) labeled with Cy3 dye to perform the girl with autism, mental retardation, facial dysmorphism, micro- aCGH experiment. The experiment was performed according to the cephaly, behavior problems, and an apparently balanced reciprocal procedures recommended from the Roche NimbleGen ISCA plus translocation of t(8;12)(q24.3;p11.2). Cytogenetic Array user guide. The data were finally represented using Nexus 6.1 (BioDiscovery, Hawthorne, CA, USA). Materials and methods Results Clinical description aCGH analysis of the patient’s blood using NimbleGen ISCA Plus e A 13-year-old girl was referred to the hospital because she had Cytogenetic Array revealed a 1.37-Mb 12p11.22 p11.21 micro- e e autism, mental retardation, and difficulty in the self-care of her deletion or arr [hg 19] 12p11.22 p11.21 (30,645,008  menstruation. She was accompanied by her mother who raised the 32,014,774) 1(Fig. 2) and a 367-kb 22q11.21 microduplication or e  possibility of hysterectomy for her daughter. The girl had a height of arr [hg 19] 22q11.21 (18,657,470 19,024,306) 3(Fig. 3). The 1.37- e 161 cm, a weight of 61 kg, and a head circumference of 54.3 cm. She Mb 12p11.22 p11.21 microdeletion encompassed 26 genes was born to a healthy 23-year-old mother and a healthy 25-year-old including three OMIM genes of IPO8, CAPRIN2, and DDX11. The 367- father at term with a birth weight of 3280 g. At the age of 3 years, delay kb 22q11.21 microduplication encompassed 20 genes including of speech was noted and early intervention was made. At the age of 8 four OMIM genes of USP18, DGCR6, PRODH and DGCR2. years, she was found to have autism, and cytogenetic analysis revealed an apparently balanced reciprocal translocation and a karyotype of Discussion 46,XX,t(8;12)(q24.3;p11.2)dn (Fig. 1). The parental karyotypes were e normal. On examination, she had microcephaly, hypertelorism, flat The present case carried a 1.37-Mb 12p11.22 p11.21 micro- facial profile, prominent forehead, thick scalp hair, upslanting palpe- deletion encompassing IPO8, CAPRIN2 and DDX11 at the trans- bral fissures, broad nasal bridge, bulbous nose, right simian crease, location breakpoint of 12p11.2, with some of the phenotypic bilateral clinodactyly of the fifth fingers, and bilateral pes cavus. She features of 12p interstitial deletion syndrome such as facial dys- had learning difficulties and mental retardation with an intelligent morphism, mental retardation, microcephaly, and clinodactyly. The quotient of 50, and was enrolled in a special school for children with 12p interstitial deletion syndrome is characterized by mental mental retardation. She manifested emotional instability, cognitive retardation, developmental delay, craniofacial abnormalities, impairment, behavior problems, and jumping-like gait. She was microcephaly, brachydactyly, and clinodactyly [3,4]. To date, at least e diagnosed with autistic spectrum disorder according toThe Diagnostic six cases with an interstitial deletion of 12p involving 12p12 p11 e fi and Statistical Manual of Mental Disorders (DSM)-IV criteria. have been reported [4 9]. Malpuech et al [5] rst reported a 3- year-old boy with del(12)(p12.2/p11) and the phenotype of microcephaly, facial dysmorphism, psychomotor retardation, cli- aCGH nodactyly, and optic nerve atrophy. Boilly-Dartigalongue et al [6] reported a 17-year-old girl with del(12)(p12.1/p11), dilated Whole-genome aCGH on the DNA extracted from peripheral lateral ventricle, optic nerve atrophy, double right ureter, facial blood of the patient was performed using NimbleGen ISCA Plus dysmorphism, psychomotor retardation, mental retardation, dental anomaly, and cardiovascular anomalies. Nagai et al [7] reported a 5- year-old boy with del(12)(p12.2/p11.21), mild mental retardation, cartilaginous exostoses, cone-shaped epiphyses of hands, brachy- dactyly, clinodactyly, hypertension, hypoplastic hair and skin, oli- godontia, short stature, and an asphyxiating thoracic dystrophy or chondroectodermal dysplasia-like syndrome. Bähring et al [8] re- ported a 6-year-old boy with del(12)(p12.2/p11.21), brachy- dactyly, cone-shaped epiphyses, and hypertension. Lu et al [9] reported a 13-year-old girl with del(12) (p12.2/p11.21), moder- ate mental retardation, chaotic tooth rearrangement, brachy- dactyly, short stature, round face, strabismus, shortened metacarpals of digits, and borderline high blood pressure. Soysal et al [4] reported a 12-year-old girl with del(12)(p12.1/p11.2), microcephaly, facial dysmorphism, irregular tooth rearrangement, phalangeal deformity, camptodactyly of the hands, brachydactyly of the feet, joint hypermobility, scoliosis, autism, and a 0.19-Mb 2p16.3 deletion encompassing NRXN1 gene. The present case had haploinsufficiency of IPO8, CAPRIN2 and DDX11. IPO8 (OMIM 605600) is a Ran-binding and is a gene silencing factor that targets Argonaute to distinct mRNAs [10]. DDX11 or CHLR1 Fig. 1. A karyotype of 46,XX,t(8;12)(q24.3;p11.2). The arrows indicate the breakpoints. (OMIM 601150) is a DNA helicase that interacts with components of 76 C.-P. Chen et al. / Taiwanese Journal of Obstetrics & Gynecology 53 (2014) 74e78

Fig. 2. Whole-genome array comparative genomic hybridization analysis of peripheral blood of the patient showed a 1.37-Mb 12p11.22ep11.21 microdeletion or arr [hg 19] 12p11.22p11.21 (30,645,008,e32,014,774) Â 1. (A) Chromosomal view and (B) zoom in view.

the cohesin complex and plays a role in sister chromatid adhesion reimplant ureters. Mukaddes and Herguner [19] reported a 9-year- and affects cell proliferation and stability [11,12]. old girl with familial 22q11.2 duplication, facial dysmorphism, mild Biallelic mutations in DDX11 are associated with a cohesinopathy mitral insufficiency and prolapse, cleft palate, mental retardation, and a chromosomal-instability syndrome of Warsaw breakage severe autistic disorder, seizures, and speech delay. Her father had syndrome (OMIM 613398) [13,14]. DDX11 knockout mice with loss the same 22q11.2 duplication but was normal. Ramelli et al [22] of DDX11 helicase are associated with aneuploidy [15]. DDX11 is reported a 4-year-old boy with 22q11.2 duplication, facial dys- also essential for mesoderm development during early mouse morphism, mental retardation, speech delay, and severe autistic embryogenesis [16]. CAPRIN2 (OMIM 610375) is a cytoplasmic disorder. Lo-Castro et al [23] reported a 4-year-old girl with familial activation-and-proliferation-associated protein and is involved in 22q11.2 duplication, facial dysmorphism, severe mental retardation, the regulation of growth of erythroblasts [17]. severe autistic disorder, and speech disorder. Her mother had the The present case also carried a 367-kb 22q11.2 microduplication same 22q11.2 duplication, cleft palate, hiatal hernia, lower normal associated with autism. To date, at least 10 cases of microduplication intelligence quotient, and learning difficulties. Christian et al [21] of 22q11.2 associated with autism have been reported [18e24]. reported dup(22)(q11.21) in two cases (one male and one female) Hassed et al [18] first reported an 18-year-old woman with 22q11.2 with autistic spectrum disorder. The male patient had an inherited duplication, normal intelligence, Asperger syndrome, chronic aortic 2.2-Mb duplication, and the female patient had a >2.2-Mb de novo regurgitation, mild mitral and tricuspid regurgitation, and surgical duplication. Cai et al [20] reported dup(22)(q11.21) in two cases (one C.-P. Chen et al. / Taiwanese Journal of Obstetrics & Gynecology 53 (2014) 74e78 77

Fig. 3. Whole-genome array comparative genomic hybridization analysis of peripheral blood of the patient showed a 367-kb 22q11.21 microduplication or arr [hg 19] 22q11.21 (18,657,470,e19,024,306) Â 3. (A) Chromosomal view and (B) zoom in view. female and one male) with autistic spectrum disorder. The female Acknowledgments patient had paternally inherited dup(22)(q11.21), and the male patient had de novo dup(22)(q11.21). Van Campenhout et al [24] This work was supported by research grants NSC-99-2628-B- reported a 7-year-old boy with paternally inherited 22q11.2 dupli- 195-001-MY3 and NSC-101-2314-B-195-011-MY3 from the Na- cation, developmental delay, motor delay, speech delay, cognitive tional Science Council and MMH-E-102-04 from Mackay Memorial impairment, learning difficulties, motor impairment, attention Hospital, Taipei, Taiwan. deficit, social problems, autism, and behavior problems. Van Cam- penhout et al [24] additionally reported a 9-year-old boy with de References novo 22q11.2 duplication, growth delay, developmental delay, cognitive impairment, motor impairment, attention deficit, social [1] Chen C-P, Chen M, Ma G-C, Su Y-N, Ko T-M, Lin Y-H, et al. Array comparative problems, autism, and behavior problems. In a study of 11 Flemish genomic hybridization characterization of prenatally detected de novo e apparently balanced reciprocal translocations with or without genomic children (age 3 13 years) with 22q11.2 microduplication, Van imbalance in other chromosomes. J Chin Med Assoc 2013;76:53e6. Campenhout et al [24] found autism in two, cognitive impairment in [2] Chen C-P, Wu P-C, Su Y-N, Chern S-R, Tsai F-J, Lee C-C, et al. Balanced recip- seven, learning difficulty in eight, attention deficit in 10, attention rocal translocations at amniocentesis. Taiwan J Obstet Gynecol 2010;49: e fi 455 67. de cit hyperactivity disorder in three, social problems in eight, and [3] MacDonald AH, Rodríguez L, Aceña I, Martínez-Fernández ML, Sánchez- behavior problems in eight of the affected children, and a wide and Izquierdo D, Zuazo E, et al. Subtelomeric deletion of 12p: description of a third heterogeneous range of cognitive and behavioral phenotypes in the case and review. Am J Med Genet 2010;152A:1561e6. [4] Soysal Y, Vermeesch J, Davani NA, Hekimler K, Imirzalioglu NA. 10.46 Mb affected children. In their study, other clinical features included 12p11.1-12.1 interstitial deletion coincident with a 0.19 Mb NRXN1 deletion heart defects, cleft lip, feeding problems, hearing impairment and detected by array CGH in a girl with scoliosis and autism. Am J Med Genet facial dysmorphism, and there was no correlation between the 2011;155A:1745e52. [5] Malpuech G, Kaplan J-CL, Rethore MO, Junien CL, Geneix A. A case of incom- phenotype and the size of the duplication. plete deletion of the short arm of . Lyon Medical 1975;233: In conclusion, we present and discuss the phenotypic conse- 275e9. quences of a 13-year-old girl with an apparently balanced trans- [6] Boilly-Dartigalongue B, Riviere D, Junien C, Couturier J, Toudic L, Marie F, et al. location but in fact affected by concurrent deletion and duplication A new case of partial monosomy of chromosome 12, del(12)(p11.01 to p12.109) confirming the location of the gene for lactate dehydrogenase B. Ann in two different chromosomal regions. Our presentation provides Génét 1985;28:55e7. information on diagnostic phenotype of 12p11.22ep11.21 micro- [7] Nagai T, Nishimura G, Kato R, Hasegawa T, Ohashi H, Fukushima Y. deletion and 22q11.2 microduplication. Del(12)(p11.21p12.2) associated with an asphyxiating thoracic dystrophy or chondroectodermal dysplasia-like syndrome. Am J Med Genet 1995;55:16e8. 78 C.-P. Chen et al. / Taiwanese Journal of Obstetrics & Gynecology 53 (2014) 74e78

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