Molecular cytogenetics

We have developed nineteen (19) Microdeletion assay for detection of Microdeletion syndrome and nine (9) FISH probes for abortus panel. Chromosome location and specific region of each deletion is given in the table. Report of each will take one week time.

Microdeletion Panel

Sr. No.

Clone No.

Chromosome region

Clone sequence

Syndrome

1

134

1p36.33

2062347 – 2242269 (NCBI36/hg18)

1p36 deletion

2

111

3q29

197875785-198039099 (NCBI36/hg17)

3q29 micro-deletion

3

72

4p16.3

1850024-2043467(NCBI36/hg18)
1847457-2040900 (NCBI36/hg17)

Wolf-Hirchhorn

4

105

5p15.33

517592-680005 (NCBI36/hg17)

5p deletion

5

106

5p15.33

791212-851443 (NCBI36/hg17)

5p deletion

6

102

7q11.23

73055980-73238018 (NCBI36/hg17)

Williams-Beuren syndrome

7

83

12q24.13

111255201-111349707 (NCBI36/hg17)

Noonan SyndromePTPN11

8

84

12q24.13

111347631-111528725 (NCBI36/hg17)

9

135

15q11.2

22601976 -  22822028 (NCBI36/hg18)

Prader-Willi/Angelman syndrome

10

32

16p13.3

266,994-431,793 (NCBI36/hg17)

Rubeinstein Taybi

11

93

17p11.2

17558117-17715827 (NCBI36/hg17)

Smith-Magenis syndrome

12

115

17p13.3

2316082-2496238

Miller-dicker lissencephaly syndrome

13

95

18p11.31

3288400-3472372 (NCBI36/hg17)

TGIF holoprosencephaly 4

14

66

21q22.11q22.12

34669619-34683322

DSCR1/AML1

15

26

22q11.2

19,310,307-19,458,514(NCBI36/hg18)

Cat eye syndrome

16

75

22q11.21

17467195-17628564(NCBI36/hg17)

De-George Syndrome

17

76

22q11.21

17630846-17818813(NCBI36/hg18)

18

129

Xp22.33

433105 – 614235 (NCBI36/hg18)

SHOX

19

131

Yp11.31

2550466 -2721357 (NCBI36/hg18)

SRY sequence


Abortus study by FISH:

Cytogenetic study is frequently required from product of conceptus and in nearly 20% cases culture fails to grow due to contamination or cell death. Hence based on nearly 5000 cases we have observed common anomalies obtained in POC and developed FISH probes for the same. Whenever culture fails to grow we provide FISH study to find out common chromosomal anomalies observed in majority of the POC.

Abortus Panel

Sr. No.

Clone No

Chromosome Position

Sequence

1

52

13q14.2

49,266,776-49,444,926(NCBI36/hg17)

2

11

15q26.3

100,092,334-100,219,143(NCBI36/hg18)

3

90

16q22.1

65322062-65492747 (NCBI36/hg17)

4

4

18q11.1 - 18q11.2

17,274,439-17,431,001(NCBI36/hg17)

5

65

19p13.3p13.2

6,726,912-6,917,544 (NCBI36/hg17)

6

97

20p13

151432-363097 (NCBI36/hg17)

7

74

21q22.12

34958333-35122861(NCBI36/hg17)

8

130

Xp22.32 - Xp22.31

5704698 – 6023106(NCBI36/hg18)

9

121

Yq11.1 - Yq11.21

12376396 – 12585190 (NCBI36/hg18)

 



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