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Table 1 Segmental UPD

From: Clinical significance and mechanisms associated with segmental UPD

Case

UPD interval

TERMINAL ROH (Mb)

Origin

Age/source

Indication

1

1pter → p36.22

9.39

Mat

9.3 years

Multiple congenital anomalies: der(1)t(1;17) in amnio analysis

2

1pter → p36.22

9.33a

Mat

CVS and AF

NIPT: Terminal del(1)(p36), 60% deletion in CVS, copy neutral in AF, normal fetal ultrasound

3

1pter → p36.12

21.58

NA

AF

NIPT: Terminal del(1)(p36), terminal dup(1)(q42); cardiac defect, hypotonic, dysmorphic at birth

4

1pter → p36.13

16.32b

Mat

AF and POC

NIPT: Terminal del(1)(p36.23) and dup(1)(p36.23p36.22), normal pediatric follow-up

5

1pter → p36.13

17.28c

NA

Newborn and Placenta

NIPT: Terminal del(1)(p36.13) and mos dup(18)(q22q23), VSD, esophageal atresia

6

3pter → p22.1

43.13d

Mat

24 years blood and buccal

Developmental delay, hearing loss, obesity, mosaic unbalanced der(4)t(3;4)(p22;q35) detected in early childhood

7

5pter → p15.1

16.44

Mat

51 years

Cardiomyopathy, hypertension, mental retardation

8

7q33 → qter

26.21e

Mat

CVS and AF

Ventricular septal defect, small right ventricle

9

10q26.13 → qter

11.12

Mat

Newborn

Clinically normal; CVS with terminal G-band del(10)(q26)

10

11q13.1 → qter

70.88

Mat

12 years

Encephalopathy

11

14q24.3 → qter

32.21

Pat

AF

Scalp and leg edema, short femurs/thorax (UPD14pat related)

12

15q15.3 → qter

58.54

Pat

42 years

Recurrent pregnancy loss

13

Xq25 → qter

29.32

Mat

Newborn

Fragile X full mutation x2, no paternal repeat

14

Xq13.1 → qter

85.05

Pat

2 years

Congenital anomalies of face and neck

  1. aSame ROH in both prenatal specimens; mosaic deletion in CVS, arr 1p36.33p36.22(849466–9292997)x1[0.3]
  2. bMosaic del/dup in post-delivery POC array analysis, arr 1p36.33p36.23(849466–8718884)x1[0.8], arr 1p36.23p36.22(8718885–12155862)x3[0.8]
  3. cNon-mosaic deletion in POC, arr 1p36.33p36.13(849466–17275759)x1
  4. dMosaic gain in adult blood CMA (chromosome analysis confirmed), arr 3p26.3p22.1(2693–43129322)x3[0.05]
  5. eMosaic copy neutral ROH in CVS, arr 7q33q36.3(132913480–159119220)x2[0.5] hmz. Non-mosaic in AF