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Table 2 Clinical features, treatment regimens and response to bisphosphonate treatment - previously published cases

From: Bisphosphonate therapy for spinal osteoporosis in Hajdu-Cheney syndrome – new data and literature review

Case [Ref]

Gender - Age (yr)a

NOTCH2 mutation

Fracture Details

Treatment Regimen

Scan interval (years)

Lumbar spine z-score

Acro-osteolysis

Before

After

Before

After

8. [5]

M 2

c.6909dup p.I2304HfsX9

Metatarsals

Pamidronate 3 mg/kg/3 m

5

−4.1

− 0.7

Hands and feet

No response

9.b [12]

M.6½

p.Val2221Glufs*

Long bones

Pamidronate 1 mg/kg/3 m - 1 yr

Alendronate 35–70 mg - 5½ yr

6

−1.9

+ 0.1

Hands and feet

No response

 

M.17½

Zoledronate 5 mg × 1 age 17½

−2.1

−1.7

Hands and feet

Not recorded

10 [15].

F.10

Clinical

Vertebral, metatarsal, metacarpal

Pamidronate 4 mg/kg/3 m

2

−3.4

−0.7

Hands and feet

Not recorded

11 [12].

M.10½

Clinical

Vertebral, long bones

Alendronate 35–70 mg/wk

4

− 0.5

+ 2.8

Hands and feet

Slowed progression

12 [12].

F.15

p.Leu2301*

Vertebral, long bones

Zoledronate 50 μg/kg/6 m

3

−3.4

−2.4

Hands and feet

No response

13 [12].

M.15½

pGln2263*

Vertebral

Zoledronate 50 μg/kg/6 m

−0.8

− 0.7

Hands and feet

Not recorded

14 [14].

F 41

c.6854delA p.Q2285RfsX9

None

Zoledronate 5 mg/yr

3

−2.5

−2.6

Hands

Worse

15 [13].

F 57

Clinical

Vertebral compression

Alendronate 10 mg/day

4

−3.6

−2.7

Hands

No response

  1. aAt start of treatment, bPatient studied in two separate periods
  2. *translation termination codon (stop codon)