Finastéride oral 1 mg face à Finastéride oral 0,2 mg
1 essai les comparent directement, sur les mêmes patients. Voir Finastéride oral 1 mg · Voir Finastéride oral 0,2 mg
Chez des hommes de 18 à 36 ans atteints d'une alopécie androgénétique du vertex, le finastéride oral 1 mg fait mieux que la dose de 0,2 mg (Roberts 1999). À un an, 54 % des hommes sont améliorés sur photos jugées à l'aveugle contre 38 %, et la zone test gagne +85 cheveux sur 5,1 cm² contre +65, sans que cet écart soit testé. Les troubles sexuels rapportés concernent 4,3 % des hommes sous 1 mg et 6,1 % sous 0,2 mg à 26 semaines. Un seul essai, de fiabilité modérée.
Roberts 1999
Essai randomisé, risque de biais modéré. Clinical dose ranging studies with finasteride, a type 2 5-alpha-reductase inhibitor, in men with male pattern hair loss
| Critère | Finastéride oral 1 mg | Finastéride oral 0,2 mg | Écart |
|---|---|---|---|
| Gain de cheveux (cercle d'un pouce, 5,1 cm²) vertex | +69 cheveux sur 5,1 cm²Voir la citationthe increase in hair count (mean ___ SE) in the representative 1-inch diameter circular target area was similar (66 -+ 10.2 and 69 + 8.9 hairs, respectively) Citation complémentaire (significativite) At month 6, treatment with the 3 highest doses of finasteride tested (5, 1, and 0.2 mg) significantly increased hair count compared with baseline or placebo (P < .001; Table III; Figs 2 and 3) Roberts JL, Fiedler V, Imperato-McGinley J et al.. Clinical dose ranging studies with finasteride, a type 2 5-alpha-reductase inhibitor, in men with male pattern hair loss. Journal of the American Academy of Dermatology 1999. Citation reproduite au titre du droit de courte citation (article L122-5 du Code de la propriété intellectuelle). | +55 cheveux sur 5,1 cm²Voir la citationand there was a numerically smaller increase for the 0.2 mg group (55 + 9.0 hairs) Citation complémentaire (significativite) At month 6, treatment with the 3 highest doses of finasteride tested (5, 1, and 0.2 mg) significantly increased hair count compared with baseline or placebo (P < .001; Table III; Figs 2 and 3) Roberts JL, Fiedler V, Imperato-McGinley J et al.. Clinical dose ranging studies with finasteride, a type 2 5-alpha-reductase inhibitor, in men with male pattern hair loss. Journal of the American Academy of Dermatology 1999. Citation reproduite au titre du droit de courte citation (article L122-5 du Code de la propriété intellectuelle). | Non testé |
| Gain de cheveux (cercle d'un pouce, 5,1 cm²) vertex | +85 cheveux sur 5,1 cm²Voir la citationAt month 12, the finasteride 5, 1, and 0.2 mg groups demonstrated increases in hair count of 93 + 10, 85 + 11, and 65 --+- 13 hairs, respectively, from baseline (P < .001 vs placebo or 0.01 mg) Roberts JL, Fiedler V, Imperato-McGinley J et al.. Clinical dose ranging studies with finasteride, a type 2 5-alpha-reductase inhibitor, in men with male pattern hair loss. Journal of the American Academy of Dermatology 1999. Citation reproduite au titre du droit de courte citation (article L122-5 du Code de la propriété intellectuelle). | +65 cheveux sur 5,1 cm²Voir la citationAt month 12, the finasteride 5, 1, and 0.2 mg groups demonstrated increases in hair count of 93 + 10, 85 + 11, and 65 --+- 13 hairs, respectively, from baseline (P < .001 vs placebo or 0.01 mg) Roberts JL, Fiedler V, Imperato-McGinley J et al.. Clinical dose ranging studies with finasteride, a type 2 5-alpha-reductase inhibitor, in men with male pattern hair loss. Journal of the American Academy of Dermatology 1999. Citation reproduite au titre du droit de courte citation (article L122-5 du Code de la propriété intellectuelle). | Non testé |
| Patients améliorés (panel photo en aveugle) vertex | 54 %Voir la citationThe percentages of patients rated as improved were comparable between the 5 and 1 mg groups (48% and 54%, respectively), but higher than the 0.2 mg group (38%) Citation complémentaire (significativite) At month 12, the finasteride 5, 1, and 0.2 mg groups demonstrated significant efficacy compared with placebo or 0.01 mg finasteride, and the 1 mg group was superior to the 0.2 mg group (P < .05) Roberts JL, Fiedler V, Imperato-McGinley J et al.. Clinical dose ranging studies with finasteride, a type 2 5-alpha-reductase inhibitor, in men with male pattern hair loss. Journal of the American Academy of Dermatology 1999. Citation reproduite au titre du droit de courte citation (article L122-5 du Code de la propriété intellectuelle). | 38 %Voir la citationThe percentages of patients rated as improved were comparable between the 5 and 1 mg groups (48% and 54%, respectively), but higher than the 0.2 mg group (38%) Citation complémentaire (significativite) At month 12, the finasteride 5, 1, and 0.2 mg groups demonstrated significant efficacy compared with placebo or 0.01 mg finasteride, and the 1 mg group was superior to the 0.2 mg group (P < .05) Roberts JL, Fiedler V, Imperato-McGinley J et al.. Clinical dose ranging studies with finasteride, a type 2 5-alpha-reductase inhibitor, in men with male pattern hair loss. Journal of the American Academy of Dermatology 1999. Citation reproduite au titre du droit de courte citation (article L122-5 du Code de la propriété intellectuelle). | Probablement réel |
| Patients améliorés (évaluation investigateur) vertex | 91 %Voir la citationAt month 12, the investigator assessment demonstrated significant (P < .001) further improvement for the 5, 1, and 0.2 mg treatment groups, with percentages of patients rated as improved being higher than at month 6 (77%, 91%, and 81%, respectively) Roberts JL, Fiedler V, Imperato-McGinley J et al.. Clinical dose ranging studies with finasteride, a type 2 5-alpha-reductase inhibitor, in men with male pattern hair loss. Journal of the American Academy of Dermatology 1999. Citation reproduite au titre du droit de courte citation (article L122-5 du Code de la propriété intellectuelle). | 81 %Voir la citationAt month 12, the investigator assessment demonstrated significant (P < .001) further improvement for the 5, 1, and 0.2 mg treatment groups, with percentages of patients rated as improved being higher than at month 6 (77%, 91%, and 81%, respectively) Roberts JL, Fiedler V, Imperato-McGinley J et al.. Clinical dose ranging studies with finasteride, a type 2 5-alpha-reductase inhibitor, in men with male pattern hair loss. Journal of the American Academy of Dermatology 1999. Citation reproduite au titre du droit de courte citation (article L122-5 du Code de la propriété intellectuelle). | Non testé |
| Incidence d'un effet indésirable sexuel | 4,3 %Voir la citation5 mg 1 mg (n = 111) (n = 117) Patients with one or more 4 (3.6) 5 (4.3) Roberts JL, Fiedler V, Imperato-McGinley J et al.. Clinical dose ranging studies with finasteride, a type 2 5-alpha-reductase inhibitor, in men with male pattern hair loss. Journal of the American Academy of Dermatology 1999. Citation reproduite au titre du droit de courte citation (article L122-5 du Code de la propriété intellectuelle). | 6,1 %Voir la citation0.2 mg 0.01 mg Placebo 5 mg Placebo (n -- 115) (n = 117) (n = 233) (n = 111) (n = 116) 7 (6.1) 2 (1.7) 8 (3.4) 4 (3.6) 7 (6.0) Roberts JL, Fiedler V, Imperato-McGinley J et al.. Clinical dose ranging studies with finasteride, a type 2 5-alpha-reductase inhibitor, in men with male pattern hair loss. Journal of the American Academy of Dermatology 1999. Citation reproduite au titre du droit de courte citation (article L122-5 du Code de la propriété intellectuelle). | Non testé |
| Variation du DHT sérique | −68,5 %Voir la citationTreatment with finasteride significantly decreased serum DHT levels at all doses (median decrease of -67.6% _+ 3.1%, -68.5% _+ 1.4%,-61.2% ___ 1.7%, and -10.8% _+ 4.2% for the 5, 1, 0.2, and 0.01 mg groups, respectively, at month 6; P < .01 vs placebo) Roberts JL, Fiedler V, Imperato-McGinley J et al.. Clinical dose ranging studies with finasteride, a type 2 5-alpha-reductase inhibitor, in men with male pattern hair loss. Journal of the American Academy of Dermatology 1999. Citation reproduite au titre du droit de courte citation (article L122-5 du Code de la propriété intellectuelle). | −61,2 %Voir la citationTreatment with finasteride significantly decreased serum DHT levels at all doses (median decrease of -67.6% _+ 3.1%, -68.5% _+ 1.4%,-61.2% ___ 1.7%, and -10.8% _+ 4.2% for the 5, 1, 0.2, and 0.01 mg groups, respectively, at month 6; P < .01 vs placebo) Roberts JL, Fiedler V, Imperato-McGinley J et al.. Clinical dose ranging studies with finasteride, a type 2 5-alpha-reductase inhibitor, in men with male pattern hair loss. Journal of the American Academy of Dermatology 1999. Citation reproduite au titre du droit de courte citation (article L122-5 du Code de la propriété intellectuelle). | Non testé |