ライフサイエンスコーパス: craniosynostosis

1 s cause premature fusion of the skull bones (craniosynostosis).

2 in the neural crest compartment, results in craniosynostosis.

3 in Twist1 and EphA4 mutants is the cause of craniosynostosis.

4 suture fusion in a relevant genetic model of craniosynostosis.

5 activation of ERK1/2, significantly inhibits craniosynostosis.

6 with regard to the genetics of single-suture craniosynostosis.

7 apes caused by environmental deformation and craniosynostosis.

8 y to differentiate positional deformity from craniosynostosis.

9 A4, rescues the suture boundary and inhibits craniosynostosis.

10 r-reviewed articles related to strabismus in craniosynostosis.

11 d horizontal strabismus similar to syndromic craniosynostosis.

12 shown to cause syndactyly in the absence of craniosynostosis.

13 alition, conductive deafness, scoliosis, and craniosynostosis.

14 fgfr) are associated with syndromic forms of craniosynostosis.

15 logical ligand for mutant FGFRs in mediating craniosynostosis.

16 invasive treatment options for children with craniosynostosis.

17 been found in patients with various types of craniosynostosis.

18 Rs), another gene family implicated in human craniosynostosis.

19 (P148H) in humans affected with Boston-type craniosynostosis.

20 nt cause of apparently non-syndromic coronal craniosynostosis.

21 been reported in the Saethre-Chotzen form of craniosynostosis.

22 pressed in the developing skull also exhibit craniosynostosis.

23 ominant condition primarily characterized by craniosynostosis.

24 specially the metopic, an important locus of craniosynostosis.

25 usion leads to a pathologic condition called craniosynostosis.

26 that dysregulated PDGFRalpha activity causes craniosynostosis.

27 opic Hedgehog (HH) signaling is one cause of craniosynostosis.

28 ding two with isolated non-syndromic metopic craniosynostosis.

29 d hydrodynamics and brain waste clearance in craniosynostosis.

30 hat's shown to assist with the management of craniosynostosis.

31 0 eyes of 58 children (aged 0-13 years) with craniosynostosis.

32 ime not observed in models of severe metopic craniosynostosis.

33 ocedure used to repair nonsyndromic sagittal craniosynostosis.

34 sis, inflammation and incompletely penetrant craniosynostosis.

35 rgery or endoscopic repair for single-suture craniosynostosis.

36 s representation within sutures may underlie craniosynostosis.

37 of three reconstruction methods for sagittal craniosynostosis.

38 g the neurological disorders associated with craniosynostosis.

39 n Twist1 mutant mice, a well-known model for craniosynostosis.

40 echanism underlying calvarial development in craniosynostosis.

41 as well as skeletal abnormalities including craniosynostosis.

42 individuals from 12 families with MGS and/or craniosynostosis.

43 -specific finite element model of a sagittal craniosynostosis.

44 steogenic gene expression, and prevention of craniosynostosis.

45 here to optimise the management of sagittal craniosynostosis.

46 formations including midfacial anomalies and craniosynostosis.

47 347 samples from unrelated individuals with craniosynostosis.

48 o known to cause syndromic and non-syndromic craniosynostosis.

49 sly reported digenic lesion in patients with craniosynostosis.

50 conditions, such as acanthosis nigricans or craniosynostosis.

51 oles for dura mater or skull base changes in craniosynostosis.

52 ient mouse (Gli3(Xt-J/Xt-J)) and resulted in craniosynostosis.

53 ure is a clinical condition called, sagittal craniosynostosis.

54 Wnt signaling in the SAG suture phenocopies craniosynostosis.

55 rowth centers for the skull vault, result in craniosynostosis.

56 y, dysregulation of this pathway may lead to craniosynostosis.

57 which inhibits chondrogenesis, have sagittal craniosynostosis.

58 ciated with significantly increased risks of craniosynostosis (115 subjects, 2 exposed to SSRIs; odds

59 Of the 81 participants with sagittal craniosynostosis, 46 underwent endoscopic repair and 35

60 A total of 81 patients with sagittal craniosynostosis (59 male [73%]; 22 female [27%]) and 14

61 uman TWIST mutations have been implicated in craniosynostosis, a cohort of 59 patients with craniosyn

62 l pressure in patients affected by syndromic craniosynostosis, a congenital calvarial anomaly causing

63 tebrate homologs of msh, are associated with craniosynostosis, a disease affecting cranial developmen

64 Premature fusion of the cranial sutures (craniosynostosis), affecting 1 in 2000 newborns, is trea

65 craniosynostosis is the most common form of craniosynostosis, affecting approximately one in 5,000 n

66 aracteristically have frontonasal dysplasia, craniosynostosis and additional minor malformations, but

67 R3S substitution is causally associated with craniosynostosis and confirms an important role for BCL1

68 I between patients with successfully treated craniosynostosis and control subjects.

69 the dental and maxillofacial implications of craniosynostosis and discusses clinically relevant anima

70 mal recessively inherited neonatal diabetes, craniosynostosis and dominantly inherited renal dysplasi

71 elopment (including cleft lip and/or palate, craniosynostosis and facial dysostoses), comprise over o

72 s defines the most frequent cause of midline craniosynostosis and has implications for the genetic ba

73 tnatal lethality, skeletal dwarfism, coronal craniosynostosis and hearing loss; phenotypes that are a

74 osynostosis (NSC) is the most common form of craniosynostosis and includes the sagittal, metopic, uni

75 me, a common autosomal dominant condition of craniosynostosis and limb anomalies, were screened for m

76 the mouse, we found that loss of Irf6 causes craniosynostosis and mandibular hypoplasia.

77 (5.0-14.8) years for children with sagittal craniosynostosis and median age at assessment was 8.5 (7

78 ern of systemic malformation that associates craniosynostosis and neurodevelopmental abnormalities wi

79 ling can produce premature suture closure or craniosynostosis and other craniofacial deformities.

80 for Jacobsen syndrome, a syndrome including craniosynostosis and other developmental abnormalities.

81 mation disorder characterized by multisuture craniosynostosis and polysyndactyly of the hands and fee

82 d by cutis gyrata, acanthosis nigricans, and craniosynostosis and provides a useful model for investi

83 clinically relevant animal models related to craniosynostosis and resynostosis.

84 dysmorphic syndrome characterized by coronal craniosynostosis and severe midface hypoplasia, body and

85 tinctive human malformation characterized by craniosynostosis and severe syndactyly of the hands and

86 elated autosomal dominant forms of syndromic craniosynostosis and short limb dwarfism.

87 s to address the developmental mechanisms of craniosynostosis and skull morphogenesis.

88 the genetic causes of isolated single-suture craniosynostosis and syndromic forms is discussed.

89 tiple, highly localized phenotypes including craniosynostosis and synpolydactyly.

90 Secondary outcomes were the incidence of craniosynostosis and the percentage of children with PPB

91 describe venous malformations in humans with craniosynostosis and TWIST1 mutations that are recapitul

92 the potential role of new candidate genes in craniosynostosis and, potentially, for devising pharmaco

93 d oromotor difficulties, microcephaly and/or craniosynostosis, and cardiac defects in combination wit

94 ne formation, including shortened forelimbs, craniosynostosis, and clinodactyly.

95 ed craniosynostosis, non-FGFR 1/2-associated craniosynostosis, and controls).

96 der (ADHD), autism, mild facial dysmorphism, craniosynostosis, and multiple osteochondromas.

97 surgical interventions for GNAS loss-related craniosynostosis are available.

98 e affected by craniofacial disorders such as craniosynostosis are poorly understood.

99 umans can cause Alagille syndrome, which has craniosynostosis as a feature.

100 cts such as BMPs, our group has identified a craniosynostosis-associated secreted molecule, NELL-1, w

101 of cases of apparently non-syndromic coronal craniosynostosis attributable to this mutation.

102 framework for classifying genetic causes of craniosynostosis based on current understanding of crani

103 In contrast, Axin2-deficient mice develop craniosynostosis because of high beta-catenin activity.

104 Craniosynostosis, Boston type is an autosomal dominant d

105 ociated with the autosomal dominant disorder craniosynostosis, Boston type.

106 causes a Pfeiffer syndrome variant with mild craniosynostosis, broad thumbs and big toes, fixed exten

107 prisingly, Fgfr3A385E/+ mice did not exhibit craniosynostosis but did show severe memory impairments,

108 We studied 26 patients with coronal craniosynostosis but no syndromic diagnosis, who were re

109 than 100 known mutations may cause syndromic craniosynostosis, but the majority of cases are nonsyndr

110 If left untreated, craniosynostosis can cause numerous complications as rel

111 ported to cause midfacial hypoplasia in some craniosynostosis cases, but most studies focus on crania

112 raniosynostosis (LC) is a rare non-syndromic craniosynostosis characterised by fusion of the lambdoid

113 d by a mutation in the FGFR3 gene, featuring craniosynostosis, characteristic facial features, and at

114 th acanthosis nigricans (CAN, a rare type of craniosynostosis characterized by premature suture fusio

115 acterized by craniofacial phenotypes such as craniosynostosis, cleft lip/palate and micrognathia.

116 g in many common human phenotypes, including craniosynostosis, cleft palate, arterial aneurysms, cong

117 mean (SD) age was 34.6 (45.2) months in the craniosynostosis cohort (33% female), 48.9 (83.8) months

118 tions that are associated with non-syndromic craniosynostosis conditions have statistically significa

119 .926 C > G:p.S309W) in SP7 in a patient with craniosynostosis, cranial hyperostosis, and long bone fr

120 order of cutis gyrata, acanthosis nigricans, craniosynostosis, craniofacial dysmorphism, digital anom

121 Craniosynostosis (CS) is a frequent congenital anomaly f

122 Craniosynostosis (CS) is a major birth defect resulting

123 Craniosynostosis (CS) is caused by a premature fusion of

124 Craniosynostosis (CS) is the most common congenital cran

125 ture cranial suture closure in patients with craniosynostosis (CS), one of the most common congenital

126 Activating mutations of FGFRs1-3 cause craniosynostosis (CS), the premature fusion of cranial b

127 SA) on optic nerve function in children with craniosynostosis (CS).

128 tal deficiencies or premature suture fusion (craniosynostosis, CS).

129 Craniosynostosis, defined by premature fusion of one or

130 distinct genetic condition characterized by craniosynostosis, delayed closure of the fontanel, crani

131 usly elevated ICP, OSA, Chiari malformation, craniosynostosis diagnosis, logMAR visual acuity, age, o

132 Indeed, many human craniosynostosis disorders have been linked to activatin

133 ver, many patients with familial or sporadic craniosynostosis do not have the classical findings of t

134 al intervention to reduce skull deformity in craniosynostosis due to loss of GNAS.

135 ia and premature closure of cranial sutures (craniosynostosis) due to abnormal cell proliferation and

136 BMPR1A) in cranial neural crest cells causes craniosynostosis during postnatal development.

137 zed by poor mineralization of the calvarium, craniosynostosis, dysmorphic facial features, prenatal t

138 ion, to a Twist1(+/-) mouse model of coronal craniosynostosis enriches skeletal stem/progenitor cells

139 Further, craniosynostosis exacerbates amyloid pathology and plaqu

140 MP2 that is strongly associated with midline craniosynostosis explained nearly all the phenotypic var

141 Out of 63 eligible children with craniosynostosis, handheld OCT imaging was successful in

142 underlying basis of many forms of syndromic craniosynostosis has been defined on a molecular level.

143 Patients with nonsyndromic craniosynostosis have an increased incidence of signific

144 Here, we show that Twist1(+/-) mice with craniosynostosis have increased intracranial pressure an

145 Infants with craniosynostosis have skull dysmorphology, increased int

146 several human craniofacial disorders (e.g., craniosynostosis, hemifacial microsomia), and may be rel

147 human disease syndromes, including dwarfism, craniosynostosis, heritable cancer susceptibility, venou

148 tive deficits in patients with single-suture craniosynostosis; however, there are few studies examini

149 nalling, is the most common genetic cause of craniosynostosis in humans and defines Muenke syndrome.

150 most common autosomal dominant disorders of craniosynostosis in humans and is characterized by crani

151 Overexpression of NELL-1 results in craniosynostosis in humans and mice, whereas lack of Nel

152 Erf haploinsufficiency causes craniosynostosis in humans and mice, while its absence i

153 at an important early event in MSX2-mediated craniosynostosis in humans is a transient retardation of

154 Deletion of Twist1, a gene associated with craniosynostosis in humans(2,3), solely in CTSK(+) CSCs

155 ces skeletal defects, a phenotype resembling craniosynostosis in humans.

156 of skull structures, a phenotype resembling craniosynostosis in humans.

157 n results in a gain of function and produces craniosynostosis in humans.

158 olely in CTSK(+) CSCs is sufficient to drive craniosynostosis in mice, but the sites that are destine

159 del, leading to a skull deformity resembling craniosynostosis in patients with loss of GNAS.

160 ight provide an attractive way of preventing craniosynostosis in patients.

161 That both mutant and wild-type Msx2 elicit craniosynostosis in transgenic mice and that the Boston

162 ow that inhibition of FGF signaling prevents craniosynostosis in Twist1(+/-) mice, demonstrating that

163 usion of one or more of the cranial sutures (craniosynostosis) in humans causes over 100 skeletal dis

164 ent of a murine model system of Crouzon-like craniosynostosis induced by a dominant mutation in Fgfr2

165 However, the relevance of lineage mixing in craniosynostosis induced by activating FGFR mutations is

166 aused precocious differentiation, leading to craniosynostosis initiated at the suture midline, which

167 Given the prenatal onset of most craniosynostosis, investigation of mechanisms requires m

168 , diverse cerebral malformations, unicoronal craniosynostosis, iris colobomas, microphthalmia, and in

169 Craniosynostosis is a common birth defect affecting 1 of

170 Craniosynostosis is a common human birth defect that res

171 Craniosynostosis is a condition with neurologic and aest

172 Craniosynostosis is a congenital disorder of premature o

173 Craniosynostosis is a group of disorders of premature ca

174 Craniosynostosis is a prevalent human birth defect chara

175 Craniosynostosis is a skull deformity characterized by p

176 Syndromic craniosynostosis is caused by a variety of genetic lesio

177 Craniosynostosis is characterized by the premature fusio

178 iogenesis--an unexpected finding, given that craniosynostosis is not usually associated with mutation

179 that the major determinant of Fgfr2-induced craniosynostosis is the failure to respond to signals th

180 Sagittal craniosynostosis is the most common form of craniosynost

181 which premature fusion of calvarial suture (craniosynostosis) is an infrequent but important feature

182 Premature fusion of sutures, or craniosynostosis, is a common human pathology.

183 for the FGFR2 splice variant associated with craniosynostosis, is locally abundant; immunohistochemic

184 Lambdoid craniosynostosis (LC) is a rare non-syndromic craniosyno

185 facial dysmorphism, cleft lip and/or palate, craniosynostosis, learning disability and genital, limb

186 wed decreased Twist1 expression and led to a craniosynostosis-like phenotype and polydactyly.

187 To study the effect of craniosynostosis-linked mutations in osteoblasts, we int

188 Similarly, mutations in TWIST1 cause craniosynostosis, mandibular hypoplasia and cleft palate

189 we propose that the functional signaling of craniosynostosis mutant, autoactive receptors is limited

190 acial Surgery clinic including patients with craniosynostosis (n = 40).

191 growth factor receptor [FGFR] 1/2-associated craniosynostosis, non-FGFR 1/2-associated craniosynostos

192 Gli3(Xt-J/Xt-J) Runx2(+/-) mice have neither craniosynostosis nor additional ossification centers in

193 Non-syndromic craniosynostosis (NSC) is a frequent congenital malforma

194 Single-suture non-syndromic craniosynostosis (NSC) is the most common form of cranio

195 Craniosynostosis occurs in approximately 1 in 2,000 chil

196 that is characterized by frequent fractures, craniosynostosis, ocular proptosis, hydrocephalus, and d

197 and we report herein that these mice exhibit craniosynostosis of the coronal suture, as well as other

198 t there are significantly increased risks of craniosynostosis, omphalocele, or heart defects associat

199 two gene variants that rarely cause midline craniosynostosis on their own make the development of th

200 causes suture dysmorphogenesis resulting in craniosynostosis, one of the most common craniofacial de

201 ention could be applied for the treatment of craniosynostosis or other severe bone disorders caused b

202 matically grouped under the rubric Marfanoid-craniosynostosis or Shprintzen-Goldberg syndrome (SGS).

203 n children with subacute conditions, such as craniosynostosis or tumor, may enable timely interventio

204 ssure and/or diminished CSF flow, as seen in craniosynostosis or with ageing, is a possible therapeut

205 Craniosynostosis, or premature cranial suture fusion, re

206 reviously linked to azole antifungal agents: craniosynostosis, other craniofacial defects, middle-ear

207 it a substantial increase in the severity of craniosynostosis over individual heterozygotes.

208 th factor receptor type 2 (FGFR2) gene cause craniosynostosis, particularly affecting the coronal sut

209 The craniosynostosis patient was chromosomally XY, but prese

210 with Saethre-Chotzen syndrome and in 2 of 43 craniosynostosis patients with no clear diagnosis.

211 Here, we show that craniosynostosis patients with SVs containing the histon

212 trabismus is necessary to preserve vision in craniosynostosis patients.

213 be explored in order to improve outcomes for craniosynostosis patients.

214 ature bone formation in calvarial sutures of craniosynostosis patients.

215 or tissue engineering of cranial sutures for craniosynostosis patients.

216 ng that Runx2 haploinsufficiency rescued the craniosynostosis phenotype of Axin2(-/-) mice.

217 Msx2 function and thus leads to the dominant craniosynostosis phenotype.

218 ance, the cardinal features of which include craniosynostosis, polysyndactyly, obesity, and cardiac d

219 Apert syndrome (AS) is characterized by craniosynostosis (premature fusion of cranial sutures) a

220 whose mutations cause different syndromes of craniosynostosis (premature fusion of cranial sutures) h

221 2,3,4,5,6,7), causes complex craniosynostosis (premature fusion of the cranial suture

222 rt syndrome, one of the most severe forms of craniosynostosis, primarily caused by missense mutations

223 Indeed, patients with OD present with craniosynostosis, prominent supraorbital ridge, and depr

224 isorders of premature cranial suture fusion (craniosynostosis) provide one route to the identificatio

225 alization and pathologic calvarial fusion in craniosynostosis reflect the interaction of two separate

226 ) that produce fusion-driving osteoblasts in craniosynostosis remains poorly understood.

227 rs (<3 years) at 1 of 3 surgical centers for craniosynostosis repair with either endoscopic surgery o

228 Most cases of craniosynostosis require complex cranial vault reconstru

229 skull development and suggests that PFM and craniosynostosis result, respectively, from loss and gai

230 rate a pathogenic role for ERK activation in craniosynostosis resulting from FGFR2 with the S252W sub

231 tal synostosis is the most occurring form of craniosynostosis, resulting in calvarial deformation and

232 Craniosynostosis results from premature fusion of the cr

233 help unveil the genetic mechanism of the two craniosynostosis risk loci.

234 contains a sequence variant associated with craniosynostosis risk.

235 r respiratory tract infection (eight [73%]), craniosynostosis (seven [64%]), and pneumonia (seven [64

236 rt defects, and prominent skeletal features (craniosynostosis, short stature, brachydactyly, and synd

237 overlap with genomic risk loci for sagittal craniosynostosis, show elevated activity cranial neural

238 han syndromic CS, with sagittal nonsyndromic craniosynostosis (sNCS) presenting as the most common CS

239 association study for nonsyndromic sagittal craniosynostosis (sNSC) using 130 non-Hispanic case-pare

240 ho have a distinct phenotype in which severe craniosynostosis, specifically involving the coronal sut

241 -Chotzen syndrome (typically associated with craniosynostosis), substitutions uniquely affecting the

242 meningeal lymphatic networks are affected in craniosynostosis, suggesting that the clearance of beta-

243 effect of the FGFR2C278F mutation of Crouzon craniosynostosis syndrome on receptor trafficking, ubiqu

244 Kusick MIM 101,600) is an autosomal dominant craniosynostosis syndrome with characteristic craniofaci

245 Craniosynostosis syndrome-linked FGFR mutations have bee

246 e aromatase excess syndrome and the sagittal craniosynostosis syndrome-or a variant of the Antley-Bix

247 mations resembling facial dysmorphologies in craniosynostosis syndrome.

248 pert syndrome (AS) is one of the most severe craniosynostosis syndromes and is associated with severe

249 Craniosynostosis syndromes are autosomal dominant human

250 owth factor receptor 2 (FGFR2) cause several craniosynostosis syndromes by affecting the proliferatio

251 wth factor receptors (FGFRs) cause the major craniosynostosis syndromes implicates FGF-mediated signa

252 r 2 (FGFR2) are responsible for a variety of craniosynostosis syndromes including Apert syndrome (AS)

253 ations in the human FGFR2 gene cause various craniosynostosis syndromes including Crouzon and Pfeiffe

254 The identification in craniosynostosis syndromes of mutations in genes belongi

255 aniosynostosis, a cohort of 59 patients with craniosynostosis syndromes were screened for SNAIL mutat

256 ve been linked to a series of syndromes (the craniosynostosis syndromes) whose primary phenotype invo

257 GF) receptors result in chondrodysplasia and craniosynostosis syndromes, highlighting the critical ro

258 result in type I Pfeiffer, Apert and Muenke craniosynostosis syndromes, respectively.

259 Human craniosynostosis syndromes, resulting from activating or

260 variety of short-limbed bone dysplasias and craniosynostosis syndromes.

261 r (FGF) receptors cause chondrodysplasia and craniosynostosis syndromes.

262 (FGFR2) gene have been implicated in various craniosynostosis syndromes.

263 stinguishable on a clinical basis from other craniosynostosis syndromes.

264 r 2 (FGFR2) gene have been described in five craniosynostosis syndromes.

265 do not have the classical findings of those craniosynostosis syndromes.

266 hromosome 4p, in ten unrelated families with craniosynostosis syndromes.

267 Pfeiffer syndrome is a classic form of craniosynostosis that is caused by a proline-->arginine

268 omeodomain mutation (P148H), associated with craniosynostosis, that binds with enhanced affinity to t

269 Craniosynostosis, the fusion of one or more of the sutur

270 ature of Saethre-Chotzen syndrome is coronal craniosynostosis, the fusion of the frontal and parietal

271 Craniosynostosis, the premature fusion of cranial bones,

272 Craniosynostosis, the premature fusion of one or more ca

273 Craniosynostosis, the premature fusion of one or more cr

274 Craniosynostosis, the premature fusion of the calvarial

275 Craniosynostosis, the premature fusion of the cranial su

276 nial sutures in both human and mouse induces craniosynostosis, the premature fusion of the growing cr

277 Craniosynostosis, the premature ossification of cranial

278 treatment strategy for syndromic and complex craniosynostosis, the prevalence of retinal ONH thinning

279 ted individuals range from syndromic coronal craniosynostosis to severe growth restriction, fulfillin

280 Children with syndromic forms of craniosynostosis undergo a plethora of surgical interven

281 The incidence of craniosynostosis was 0.16% (95% CI, 0.09%-0.26%).

282 lopment and figure in the pathophysiology of craniosynostosis was suggested by the demonstration that

283 to the etiology of Axin2 deficiency-induced craniosynostosis, we generated Axin2(-/-):Runx2(+/-) mic

284 non-syndromic midline (sagittal and metopic) craniosynostosis, we performed exome sequencing of 132 p

285 To elucidate the mechanism of craniosynostosis, we studied intramembranous ossificatio

286 t FGFR2c binding to multiple FGFs results in craniosynostosis, whereas binding of mutant FGFR2c to FG

287 R2 cause the majority of syndromes involving craniosynostosis, whereas the dwarfing syndromes are lar

288 aethre-Chotzen Syndrome and is manifested by craniosynostosis, which is the premature closure of the

289 to simulate the phenotypes of single suture craniosynostosis, which we compared to the observations

290 m alone is necessary and sufficient to cause craniosynostosis, while mutation of the neural crest is

291 complex patients syndromic and complex with craniosynostosis who visited the only national referral

292 anium, we found a midline sutural defect and craniosynostosis with abnormal osteoblastic proliferatio

293 ler US can be used to identify patients with craniosynostosis with decreased intracranial compliance,

294 he skull and, in severe cases, might lead to craniosynostosis with neurological sequelae and facial h

295 rtained in a boy with mild Crouzon syndrome (craniosynostosis with normal limbs) is also present in t

296 mmediate post-injection reaction; and severe craniosynostosis with severe conductive deafness).

297 gest represent a new FGFR2-related syndrome, craniosynostosis with XY male-to-female sex reversal or

298 fer syndrome family in which two members had craniosynostosis without limb anomalies.

299 al ONH changes in syndromic and nonsyndromic craniosynostosis would be valuable.

300 l suture is most commonly fused in monogenic craniosynostosis, yet the unique aspects of its developm