Skip to main content
. 2025 Oct 19;26(10):3629–3640. doi: 10.31557/APJCP.2025.26.10.3629

Table 1.

The List of Candidate CYP2D6 and CYP2E1 Genes Selected in the Present Study with Details of PCR and RFLP Procedures Including Details of Primers and Their Sequences, Restriction Enzymes and Expected base Pairs of Expected PCR Products

Gene/
Genotype
rs number Nucleotide
change
Primer Sequence
(Forward/Reverse)
PCR
Conditions
PCR
product size
Enzyme /
Digestion conditions
Dominant
Wild type (bp)
Heterozygous
(bp)
Recessive
Mutant (bp)
CYP2D6*3
2549delA
rs35742686 (A>- (del A)  FP: 5’-ATG AGC TGC TAA CTG AGC CC -3’
RP: 5’- CCG AGA GCA TAC TCG GGA C -3’
95°C for 5 min , 30 cycles of 95°C- 30 sec,
54°C- 45 sec, 72°C- 60 sec , final extension 72°C for 5 min
270 bp 1 Unit of MspI
Incubation at 37˚C for 16h
188 bp, 82 bp 188 bp, 168 bp
20 bp
168 bp, 20 bp
CYP2D6*4
1846G>A
rs3892097 (G>A)  FP: 5’-GCT TCG CCA ACC ACT CCG-3’
RP: 5’-AAA TCC TGC TCT TCC GAG GC-3’
95°C for 5 min, 30 cycles of 95°C- 20 sec,
57°C- 20 sec, 72°C- 20 sec ,final extension 72°C for 5 min
334 bp  1 Unit of BstO1 
Incubation at 37˚C for 1h
230 bp, 105 bp 334 bp, 230 bp
105 bp
334 bp
CYP2D6*10
100C>T
rs1065852 (C>T)  FP: 5’- GTG CTG AGA GTG TCC TGC C -3’
RP: 5’- CAC CCA CCA TCC ATG TTT GC -3’
95°C for 5 min, 30 cycles of 95°C- 60 sec, 53°C- 60 sec,
72°C- 60 sec, final extension 72°C for 5 min
344 bp  1 Unit of HphI
Incubation at 37˚C for 16h 
282 bp, 62 bp 282 bp, 182 bp,
100bp, 62bp
182 bp, 100 bp
62 bp
CYP2D6*17
1023C>T
rs28371706 (C>T)  FP: 5’- CGG TGG TCG TGC CTC AAT G -3’
RP: 5’- CCC GGG TCC CAC GGA AAT CT -3’
95°C for 5 min, 30 cycles of 95°C- 30 sec, 55°C- 45 sec,
72°C- 60 sec, final extension 72°C for 5 min
167 bp  1 Unit of HphI 
Incubation at 37˚C for 1h
167 bp 167 bp, 88 bp
55bp
88 bp, 55 bp
CYP2E1*5B
1293G>C
 rs2031920 (G>C)  FP: 5’-ACC CCA ATG GGT GTC TGT C-3’
RP: 5’-TCA TTC TGT CTT CTA ACT GGC AAT-3’
95°C for 5 min , 30 cycles of 95°C- 30 sec, 54°C- 45 sec,
72°C- 30 sec , final extension 72°C for 5 min
576 bp  1 Unit of PstI 
Incubation at 37˚C for 1h
294 bp, 284 bp 576 bp, 294 bp
282 bp
576 bp
CYP2E1*6
7632T>A
rs6413432 (T>A)  FP: 5’-AGG CTC GTC AGT TCC TGA AA -3’
RP: 5’-AAG GCA GGA GGA TGA CTT GA -3’
95°C for 5 min, 30 cycles of 95°C- 20 sec, 62°C- 25 sec,
72°C- 20 sec, final extension 72°C for 5 min
685 bp  1 Unit of DraI
Incubation at 37˚C for 1h 
376 bp, 309 bp 685 bp, 376 bp
309 bp
685 bp
CYP2E1*7B
71G>T
rs6413420 (G>T)  FP: 5’-CTG GAG TTC CCC GTT GTC TA-3’
RP: 5’-GGG TGA AGG ACT TGG GAA TA -3’
95°C for 5 min, 30 cycles of 95°C- 30 sec, 54°C- 45 sec,
72°C- 30 sec, final extension 72°C for 5 min
547 bp  1 Unit of DdeI 
Incubation at 37˚C for 1h
301 bp, 246 bp 547 bp, 301 bp
246 bp
547 bp