Hi Puneet,
It is interesting that your daughter's Hb has risen so quickly. It may very well be a result of the wheatgrass. Some patients respond much better to wheatgrass than others, and even majors can benefit from it, especially if their Hb regularly falls to levels of 8-10. There are unknown factors at work in some thals that result in a higher production of fetal hemoglobin. It may be that substances such as wheatgrass work better in these patients because there is already some HbF raising factor at work.
From a study concerning this difference in HbF production among similar thals
http://researchresources.bumc.bu.edu/abstract/5R01DK069646-02.htmThalassemias are man's most common Mendelian trait. Severe beta-thalassemia results from compound heterozygosity or homozygosity for mutations that abolish or impair beta-globin gene expression. The disease severity varies considerably, even among those with identical beta-thalassemia mutations and when known epistatic genetic factors, such as alpha-thalassemia, are considered. Most of this heterogeneity can be linked to the capacity to produce HbF. We hypothesize that there is genetic variation in cis-acting elements and trans-acting factors implicated in gamma-globin gene expression, in modulation of HbF concentration within erythrocytes, and in regulation of erythroid cell differentiation and proliferation. We wish to identify these genetic variations.
Studies like this may eventually explain some of these mysteries involved with the reasons for severity of thal, when all other factors seem equal.
There are factors besides the thal mutations that effect the severity of thal, so the mutations alone do not give the entire picture. Another child with the same mutations as your daughter might exhibit a much different thalassemia than your daughter. Time will tell, and if wheatgrass helps her, then do keep giving it to her. I take wheatgrass extract daily and I do think it gives me a higher energy level.
It is still too early to make any judgments about your daughter's future but there is reason for some optimism.