All the information in this table was submitted in the year 1999 or later. Older frequency information is accessible from the previous page.

Note: Progress on the next generation of the CF Mutation Database has been much slower than expected. As such, we are releasing the more recent frequency information in the older format for the time being.

If you have noticed an error or would like to submit mutation frequency information on behalf of your research center, please send email to cftr.frequency@genet.sickkids.on.ca Thank you.

Location (Ethnic origin) Total CF chromosomes screened Main Contributors
Africa
South Africa;
Johannesburg (Gauteng) (Caucasian (European origin))
380



1

1

6 3
3
1

4

3 292
Michele Ramsay, Andrea Goldman, Robyn Labrum
South Africa;
Random (Black (African origin))
16























Michele Ramsay, Andrea Goldman, Carolyn Padoa
Algeria,Marroco,Tunisia;
Random (Arabic)
52







12
3

3 1





6 15
Fran�oise Chevalier-Porst, Dominique Bozon
North America
USA;
American Southeast (Caucasian)
1470
8

11 9 24 18 1 3 19 25 9 22
28 2 8 12 2
25 965 4 Kenneth J. Friedman, Zhaoqing Zhou, Elizabeth M. Rohlfs, Lawrence M. Silvermann
USA;
American Southeast (African-American)
52
1









1


1




27 1 Kenneth J. Friedman, Zhaoqing Zhou, Elizabeth M. Rohlfs, Lawrence M. Silverman
South/Central America
Colombia;
Bogota, Antioquia(NW), Valle(SW), Caldas(Center), Santander(NE), Bolivar(N) (Mestizos)
152









6

1 1
1




73
Genoveva Keyeux, Clemencia Rodas, Thierry Bienvenu, S. Bousquet, D. Vidaud
Brazil;
South and Southeast / Parana, Santa Ca tarina and Minas Gerais states (Caucasian)
272

1


4 1 1
18
8 8 12
8 1 2

6 124 1 Salmo Raskin, Lilian Pereira, Fabio Rueda Faucz, Lodercio Culpi
Brazil;
Southeast / Minas Gerais state (African-Brazilians)
76









1
1
2






9
Salmo Raskin, Lilian Pereira, Fabio Rueda Faucz, Lodercio Culpi
Asia/Middle East
Lebbanon;
Beirut (Lebbanese)
54



1







4






8 18
Mireille Claustres, Marie des Georges, Andr� Megarbane
Australasia
Australia;
Victoria (Caucasian)
1234
7




14
4 30 62
18 1 5 3
3 1 2 5 857
Desiree du Sart, Karina Forshaw, Ellen Craig
Northern Europe
France;
Brittany (Celtic)
710 33 6
1 6 1
5

5 24
7
2

4

5 529 1 Claude F�rec, Virginie Scotet, Claudine Verlingue
France;
Brittany (Random)
280 5 1

2

2

3 8 2 8



1

1 170 3 Martine Blayau, Christ�le Dubourg, V�ronique David
Belgium;
Brussels, Flanders (Caucasian)
266 1 2



2


10

5 2
2



2 196 1 Willy Lissens, Maryse Bonduelle, Inge Liebaers
France;
Eastern France (European)
1428 6 22 1 1 14 5 12 2
1 51 5 7 25 7 2 4 5 13

15 1002 7 Fran�oise Chevalier-Porst, Dominique Bozon
France;
Ile de France (Caucasian)
332 1 2 1 2 2
1 1 2
10 3 1 5 2 1
3 4

6 221 3 Delphine Feldmann
France;
Normandy/Caen (Caucasian)
200
1

2
1 1
1 4 6
4 2


1


131 8 Herve Mittre, Pierre Leymarie
France;
Random (Caucasian)
1962 13 31 1 5 20 14 3 1 4 5 53 25 7 47 9 7 5 10 21
4 17 1343 17 Claude F�rec, Virginie Scotet, Claudine Verlingue
England;
Yorkshire (Pakistani)
40













2






10
Lucy A. Ellis, Graham R. Taylor
England;
Yorkshire (Caucasian)
1600 2
4

6 3 14

12 36 2 7
28 1 3 2 5 2 2 1250 2 Lucy A. Ellis
Southern Europe
Turkey;
Random (Caucasian)
202









9
1 4


1


1 42
Tuncer Onay, Betul Kirdar
France;
Southern France (Caucasian)
600 2 6 1 1 4 2 8 4 7
31 3 4 15 2 1 6 2


2 306 4 Mireille Claustres, Marie des Georges, Caroline Guittard