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NEWSLETTER #46, June 23, 1992

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1. Mutation reports:

Name           Amino acid change   Nucleotide change      Exon      Reference                    
                                                                                                 
876-5T->G      splice mutation?    deletion of at least   intron    Costes B, Martin J, Ghanem   
                                   8 bp from 876-10       6a        N, and Goossens M (May 27)   
***            complex deletion    complex deletion       4-7,11-1  Morral N, Nunes V, Casals    
                                   involving exons 4-7    8         T, Estivill E (June 3)       
                                   and 11-18                                                     
2991del32      frameshift          deletion of 32 bp      15        Dörk T, Tümmler B (June 8)   
                                   from 2991 to 3022                                             
I1328L         Ile->Leu at 1328    ATA->TT beginning      22        Dörk T, Tümmler B (June 8)   
/4116delA      and frameshift      from 4114                                                     
K716X          Lys->Stop at 716    AA->GT at 2277 and     13        Férec C, Quere I,            
                                   2278                             Verlingue C, Mercier B,      
                                                                    Audrezet MP, Quillermit H    
                                                                    (June 12)                    
457TAT->G      frameshift          TAT->G beginning       4         Férec C, Quere I,            
                                   from 457                         Verlingue C, Mercier B,      
                                                                    Audrezet MP, Quillermit H    
                                                                    (June 12)                    
G628R(G->C)    Gly->Arg at 628     G->C at 2014           13        Cuppens H, Marynen P,        
                                                                    Cassiman JJ (June 15)        
458delAT       frameshift          deletion of AT at 458  4         Glavac D, Ravnik-Glavac M,   
                                                                    Komel R, Dean M (June 17)    
977insA        frameshift          insertion of A at 977  6b        Cheadle J, Meredith L        
                                                                    (June 18)                    
4016insT       frameshift          insertion of T at      21        Cheadle J, Meredith L        
                                   4016                             (June 18)                    
A349V          Ala->Val at 349     C->T at 1178           7         Férec C, Quere I,            
                                                                    Verlingue C, Mercier B,      
                                                                    Audrezet MP and Quillermit   
                                                                    H (June 22)                  
A534E          Ala->Glu at 534     C->T at 1733           11        Férec C, Quere I,            
                                                                    Verlingue C, Mercier B,      
                                                                    Audrezet MP and Quillermit   
                                                                    H (June 22)                  
876-14del12    splicing mutation?  deletion of 12 bp      intron    Férec C, Quere I,            
                                   from 876-14            6a        Verlingue C, Mercier B,      
                                                                    Audrezet MP and Quillermit   
                                                                    H (June 22)                  

Note: The mutation 876-5T->G reported by Costes et al. (May 27) is almost the same as 876-14del12 reported by Férec et al. (June 22), according to their original description. The same applies to 457TAT->G reported by Férec et al. (June 12) and 458delAT reported by Glavac et al. (June 17). The four reporting groups may want to re-examine their sequencing gel to make sure that the alterations are indeed different. Different symbols have been assigned for the time being.

*** There is no symbol given to the large deletion reported by Morrals et al. Please make suggestions. If there is no innovative name, I would simply call it CFdel#1.

2. DNA sequence polymorphisms/variations in the coding region:

Nucleotide position   Amino acid change          Exon    Reference                  
                                                                                    
641 (G or A)          Arg->His at 170            5       Devoto M, Rady M,          
                                                         Ronchetto P, Pia Russo     
                                                         M, Romeo G (May 22)        

3. DNA sequence polymorphism elsewhere in the CFTR gene:

Description           Location                                Reference                  
                                                                                         
3271+42A->T           intron 17a                              Cuppens H, Marynen P and   
                                                              Cassiman JJ (June 15)      
3272-93T->C           intron 17a                              Glavac D, Ravnik-Glavac    
                                                              M, Komel R, Dean M (June   
                                                              15)                        

4. Correction:

H1054D, C->G at 3292 not H1054R (Férec et al., NL#45) Apology from Ferec et al.

5. A CF mutation screening report was mailed to all members of this consortium on June 18. Some of you might have received it already. If you fail to get it within the next while, please let me know. Please let me know of any mistakes in the table, as there are inevitably errors in transferring such a large set of data.

6. An up-to-date list of mutations in the CFTR gene is attached to this newsletter. Please let me know of any corrections or new references.

Best regards,

Lap-Chee Tsui