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Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a potentially curative treatment option for hematological malignancies. However, it may result in graft-versus-host disease (GvHD) which is associated with a high mortality rate. The standard-of-care treatment of GvHD is high-dose steroids as a first-line treatment, while no standard second-line treatment is established.1 Steroid-resistant GvHD, in particular, of the gastrointestinal tract (GI-GvHD) is a major concern to allo-HSCT recipients. Therefore, new approaches are needed to improve the treatment of steroid-resistant GI-GvHD.
On 23 July 2019, Amin T. Turki and colleagues from University Hospital Essen, DE, published the results from this retrospective study in Annals of Hematology and demonstrated that ileostomy induced significant clinical responses in patients with steroid-resistant GI-GvHD along with a reduction of activated T-cells and changes of the intestinal microbiota.
Characteristic
|
Conventional therapy plus ileostomy |
Conventional therapy |
||
n |
% |
n |
% |
|
GvHD; graft-versus-host disease |
||||
Total enrolled and treated |
10 |
100 |
55 |
100 |
Overall GvHD grade |
||||
III |
0 |
0 |
6 |
11 |
IV |
10 |
100 |
49 |
89 |
Gastrointestinal GvHD stage |
||||
3 |
0 |
0 |
8 |
15 |
4 |
10 |
100 |
47 |
85 |
Liver GvHD stage |
||||
1 |
3 |
30 |
4 |
7 |
2 |
1 |
10 |
5 |
9 |
3 |
4 |
40 |
9 |
16 |
4 |
2 |
20 |
10 |
18 |
Skin GvHD stage |
||||
1 |
1 |
10 |
0 |
0 |
2 |
4 |
40 |
13 |
24 |
3 |
1 |
10 |
20 |
36 |
4 |
2 |
20 |
10 |
18 |
Fecal calprotectin |
3000 |
124–3079 |
360 |
47–3010 |
Cause of death |
CT+I |
CT |
||
n |
% |
n |
% |
|
Acute GvHD |
1 |
10 |
17 |
31 |
Chronic GvHD |
1 |
10 |
0 |
0 |
Sepsis |
1 |
10 |
15 |
27 |
Aspergillosis |
1 |
10 |
9 |
16 |
ARDS |
0 |
0 |
7 |
13 |
Encephalopathies |
0 |
0 |
2 |
4 |
Viral encephalitis |
0 |
0 |
1 |
2 |
Cardiovascular |
2 |
20 |
1 |
2 |
Secondary neoplasia |
1 |
10 |
0 |
0 |
CT, conventional therapy; GvHD, graft-versus-host disease |
This study shows ileostomy as a promising treatment choice for steroid-resistant GI-GvHD. Correlative studies indicate that ileostomy resulted in a significant reduction of fecal volumes through intestinal adaptation, reduction of activated T-cells, and enhanced diversity of the intestinal microbiota. The authors suggest that ileostomy should be performed as early as possible, as GvHD-associated infectious mortality increased with time. The authors concluded that a controlled, randomized trial comparing ileostomy to other second-line GvHD treatments should corroborate these results.
References