this reflects the other study with more patients, it was french twoo.some cleared at 48weeks, the others had decline to very low levels and 1 did not respond
a strange point is those on mono nuc cleared while those on combo did not.since patients are really a few this might be coincidence
those clearing were:
3 on mono adv
1 on mono etv
1 on mono lam
genotype looks like having no influence, we had A,B,D,F and those not clearing had A and D
it would be very interesting to see if vitamin d could change all this by boosting peg response
10 patients
3 got hbsag decline
1 got no response
before IFN add on: 1309iu/ml (1243–1722)
Baseline 1233iu/ml ( 974–1754)
Week 24 481iu/ml ( 20– 984)
Week 48 363iu/ml ( 40–1380)
Week 96 170iu/ml ( 115–1110)
6 months post-IFN 173iu/ml ( 100–1010)
12 months post-IFN 147iu/ml ( 70–1000)
they all got benefit (except the one stopping at 24weeks for non response which keeps the values around 1000iu/ml, but even this patient got continuous slow decline after the 24weeks on peg)
interesting points of the study:
10 patients
6 got hbsag negative
before IFN add on: 170iu/ml (from 50–6240iu/ml)
Baseline 179iu/ml (from 50–7900iu/ml)
Week 24 37iu/ml (from 15– 240iu/ml)
Week 48 0iu/ml (0–121)
Week 96 0iu/ml (0–20)
6 months post-IFN 0iu/ml (0–0)
12 months post-IFN 0iu/ml (0–0)
The paper shows the quant hbsag curves for all patients. Of the six responders four were between ten and about two hundred IU of hbsag as baseline, one was 1500 and one was 6000. All four non responders had values over 1000 IU. Only two patients seroconverted.
Re the NAs used only one was on Tdf plus lam, none on Tdf only.
In summary this approach works far better when the spontaneous reduction in cccDNA is already present and a substantial immune response preexists.
The same trend can be seen in other papers that test the na plus peg ifn combo therapy.
The results are slightly more encouraging. Obviously we would like to know the baseline qHBSAg before Intf add-on and their decline during treatment. I wonder whether the length of INTF treatment is influenced by the rate of decline of qHBSAg and how, and whether a stopping rule can be inferred, 96 weeks is awfully long to be on INTF. Finally, I would also like to know the genotype of the patients. A lot of these results do not apply to patients infected at birth as in Asians of genotype. B and C.
extremely rare since hbsag decrease by pegintf eliminiates almost all cccdna
studies on peg add on never reporeted a relapse
By the way how often does relapse happen after hbsag loss?
i posted this study, among the many we are seeing lately about the add on, to see if any member is able to find the hbsag levels of the 3 patients not clearing hbsag
i think it is very important to see if those not clearing were able to get very low levels of hbsag, this would be a good success too.