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Table 2 Basic Demographics of TSC patients in Hong Kong

From: Prevalence, mortality and healthcare economic burden of tuberous sclerosis in Hong Kong: a population-based retrospective cohort study (1995–2018)

Study period

1-1-1995 to 24-9-2018

Total populationa

7,336,585

Total number of TSC cases identified

321

Ethnicity, n (%)

 Chinese

299 (93.1%)

 Non-Chinese

22 (6.9%)

Total number of surviving TSC patients b

284

Prevalence (in 100,000)b

3.87

Male: female ratiob

1:0.81

Paediatrics (< 18 years): adult (≥ 18 years)b

1:2.84

Neurological, renal & lung manifestations, n (%)

 Epilepsy

229 (71.3%)

 Mental retardation

101 (31.5%)

 Developmental delay

46 (14.3%)

 Brain neoplasm (including SEGA)

30 (9.3%)

 CKD (overall)

16 (5.0%)

 CKD (requiring dialysis)

4 (1.2%)

 Renal neoplasm requiring nephrectomy

10 (3.1%)

 Pulmonary LAM

5 (1.6%)

Genetic testing, n (%)c

 No mutation identified

3 (9.1%)

TSC1 mutation

8 (24.2%)

TSC2 mutation

22 (66.7%)

 Both TSC1 and TSC2 mutations

0

  1. aFrom 2016 by-census [33]
  2. bOn the date of data retrieval i.e. 24-9-2018
  3. cMolecular testing for genetic mutations was based on the data of 33 patients