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Table 2 Description of the rare conditions that were encountered

From: Experience of health care at a reference centre as reported by patients and parents of children with rare conditions

Rare disease category

Specific rare disease

Diagnosis < 3 years old

Diagnosis between age 3–18 years old

Age of diagnosis unknown

Cardiovascular number of patients: 9

Aortic stenosis

X

  

Bicuspid aortic valve

X

  

CC1CNA1c heart defect

X

  

Coarctation of the aorta

X

  

Congenital heart disease

XX

  

Hypoplastic left heart

X

  

Unbalanced AVSD

X

  

WPW Syndrome

X

  

Endocrine number of patients: 11

Addisons

 

X

X

Hypercalcaemia

X

  

Hypospadias

X

  

MRKH

  

XXXXX

PMDS

X

  

Pseudohypoparathyroidism

X

X

 

ENT number of patients: 1

Deaf in right ear

X

  

Gastrointestinal number of patients: 9

Achalasia

 

X

 

Alagilles

X

  

Chronic pseudo obstruction of large colon

 

X

 

Giant exomphalos

X

  

Hirschprungs disease

XXX

  

Congenital diaphragmatic hernia

X

  

Tracheo oesophageal fistula

X

  

Haematological/immune disorder number of patients: 6

Antiphospholipid

  

X

Autoimmune neutropenia

 

X

 

Chronic mucocutaneous candidiasis

  

X

`HSP

 

X

 

Hypergammaglobulinaemia

  

X

Lysosomal number of patients: 4

Batten disease CLN2

 

X

X

MPS 1—Hurler syndrome

XX

  

Metabolic number of patients: 2

Glycogen storage disease IX

X

  

MCADD

X

  

Musculoskeletal/dermatological number of patients: 22

Achondroplasia

X

  

Albinism

 

X

 

Arthrogyroposis

X

  

Crouzon

XXX

  

Epidermolysis bullosa

 

X

 

Erythromelalgia

  

XX

Fibular hemimelia

X

  

Malignant infantile osteoporosis

X

  

Mandibulofacial dystosis with microcephaly

 

X

 

Marfan

X

  

Mixed connective tissue disorder

 

X

XX

Popliteal pterygium syndrome

X

  

Raynauds

  

X

Sjogrens

  

XX

Talipes

X

  

Weaver syndrome

 

X

 

Neurodevelopmental number of patients: 13

Brain AVM

 

X

 

Brain injury

X

  

Cornella de lange

X

XX

 

CTNNB1 syndrome

 

X

 

Joubert syndrome

X

  

PAK1 neurodevelopmental disorder

 

X

 

Periventricular leukomalacia

X

  

Rett syndrome

X

X

 

Riboflavin transporter deficiency

 

X

 

William syndrome

X

  

Neuromuscular number of patients: 7

Adems disease

 

X

 

DMD

 

X

 

M.E.R.R.F

  

X

Small fibre neuropathy

  

X

Spinal muscle atrophy type 1

X

  

Sturge Weber

X

  

Worster drought syndrome

X

  

Oncological number of patients: 8

ALL

X

  

Brain tumour

 

XX

 

Ewing sarcoma

 

XX

 

Medulloblastoma

 

X

 

Polycystic astrocytoma

X

  

Retinoblastoma

 

X

 

Ophthalmological number of patients: 1

Bilateral congenital cataracts

X

  

Renal number of patients: 4

Bartter syndrome

X

  

CKD

X

  

Nephrogenic DI

X

  

Nephrotic syndrome

 

X

 

Respiratory number of patients: 1

NEH1 interstitial lung disease

 

X

 

Syndrome number of patients: 37

Bardet Biedi syndrome

 

X

 

Beckwith-wiedemann syndrome

X

  

Chromosome 2 deletion

X

  

Chromosome 7 partial deletion

  

X

Chromosome 8 disorder

X

  

Chromosome 8 disorder—short arm deletion, long arm duplication

X

  

CLTC chromosome abnormality

 

X

 

Deletion of 10p gene 13-15p

X

  

Di George

XX

  

Edwards/trisomy 18

X

  

Inverted duplication and deletion of 8p

X

  

Mosaic ring 14

X

  

Mowat Wilson syndrome

X

  

Noonan syndrome

X

X

 

Patau/trisomy 13

XX

X

 

Prader Willi

   

Primary ciliary dyskinesia

X

X

 

Treacher Collins syndrome

XX

  

Trichothiodystrophy

X

  

Trisomy 14

XXX

  

Tuberose sclerosis

XX

X

 

`Turner syndrome

X

  

Wolf-Hisrchhorn syndrome-9p

 

X

 

1Q43 deletion

X

  

16p11.2 micro deletion

 

X

 

22q11.2 deletion syndrome

  

X

  1. The table below shows the 103 different rare conditions in the 114 patients with a formal diagnosis. Nine patients had more than one rare condition
  2. ALL acute lymphoblastic leukaemia, AVM arteriovenous malformation, AVSD atrioventricular septal defect, CKD chronic kidney disease, CTLC cutaneous T-cell lymphoma, DI diabetes insipidus, DMD duchenne muscular dystrophy, HSP Henoch Schönlein purpura, MCADD medium chain acyl CoA dehydrogenase deficiency; MPS 1 mucopolysaccharidosis type 1, MRKH Mayer Rokitansky Kuster Hauser Syndrome, PMDS Persistent Mullerian Duct Syndrome, WPW Wolff–Parkinson–White