move bwa-typeHLA back to this repo

This commit is contained in:
Heng Li 2014-11-13 12:50:56 -05:00
parent 904afefbc6
commit fffe52a45b
4 changed files with 621 additions and 0 deletions

20
extras/run-HLA.sh 100755
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#!/bin/bash
ctg_opt=""
if [ $# -gt 1 ] && [ $1 == '-A' ]; then
ctg_opt="-A"
shift
fi
if [ $# -eq 0 ]; then
echo "Usage: $0 <prefix>"
exit 1
fi
for f in $1.HLA-*.fq; do
gene=`echo $f | perl -pe 's/^.*(HLA-[A-Z]+[0-9]*).*fq$/$1/'`
echo -e "\n*** Processing gene $gene...\n" >&2
`dirname $0`/typeHLA.sh $ctg_opt $1 $gene
done
ls $1.HLA-*.gt | xargs -i echo grep ^GT {} \| head -1 | sh | sed "s,^GT,$1,"

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var min_ovlp = 30;
if (arguments.length < 3) {
print("Usage: k8 selctg.js <HLA-gene> <HLA-ALT-exons.bed> <ctg-to-ALT.sam> [min_ovlp="+min_ovlp+"]");
exit(1);
}
if (arguments.length >= 4) min_ovlp = parseInt(arguments[3]);
var gene = arguments[0];
var buf = new Bytes();
var h = {};
var file = new File(arguments[1]);
while (file.readline(buf) >= 0) {
var t = buf.toString().split("\t");
if (t[3] != gene) continue;
if (h[t[0]] == null) h[t[0]] = [];
h[t[0]].push([parseInt(t[1]), parseInt(t[2])]);
}
file.close();
var s = {}, re = /(\d+)([MIDSHN])/g;
file = new File(arguments[2]);
while (file.readline(buf) >= 0) {
var line = buf.toString();
var m, t = line.split("\t");
var x = h[t[2]];
if (x == null) continue;
var start = parseInt(t[3]) - 1, end = start;
while ((m = re.exec(t[5])) != null) // parse CIGAR to get the end position
if (m[2] == 'M' || m[2] == 'D')
end += parseInt(m[1]);
var max_ovlp = 0;
for (var i = 0; i < x.length; ++i) {
var max_left = x[i][0] > start? x[i][0] : start;
var min_rght = x[i][1] < end ? x[i][1] : end;
max_ovlp = max_ovlp > min_rght - max_left? max_ovlp : min_rght - max_left;
}
var AS = null, XS = null;
if ((m = /AS:i:(\d+)/.exec(line)) != null) AS = parseInt(m[1]);
if ((m = /XS:i:(\d+)/.exec(line)) != null) XS = parseInt(m[1]);
if (s[t[0]] == null) s[t[0]] = [];
s[t[0]].push([AS, XS, max_ovlp]);
}
file.close();
buf.destroy();
for (var x in s) {
var is_rejected = false, y = s[x];
y.sort(function(a,b) {return b[0]-a[0]});
for (var i = 0; i < y.length && y[i][0] == y[0][0]; ++i)
if (y[0][2] < min_ovlp || y[i][0] == y[i][1])
is_rejected = true;
if (is_rejected) continue;
print(x);
}

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extras/typeHLA.js 100644
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/*****************************************************************
* The K8 Javascript interpreter is required to run this script. *
* *
* Source code: https://github.com/attractivechaos/k8 *
* Binary: http://sourceforge.net/projects/lh3/files/k8/ *
*****************************************************************/
var getopt = function(args, ostr) {
var oli; // option letter list index
if (typeof(getopt.place) == 'undefined')
getopt.ind = 0, getopt.arg = null, getopt.place = -1;
if (getopt.place == -1) { // update scanning pointer
if (getopt.ind >= args.length || args[getopt.ind].charAt(getopt.place = 0) != '-') {
getopt.place = -1;
return null;
}
if (getopt.place + 1 < args[getopt.ind].length && args[getopt.ind].charAt(++getopt.place) == '-') { // found "--"
++getopt.ind;
getopt.place = -1;
return null;
}
}
var optopt = args[getopt.ind].charAt(getopt.place++); // character checked for validity
if (optopt == ':' || (oli = ostr.indexOf(optopt)) < 0) {
if (optopt == '-') return null; // if the user didn't specify '-' as an option, assume it means null.
if (getopt.place < 0) ++getopt.ind;
return '?';
}
if (oli+1 >= ostr.length || ostr.charAt(++oli) != ':') { // don't need argument
getopt.arg = null;
if (getopt.place < 0 || getopt.place >= args[getopt.ind].length) ++getopt.ind, getopt.place = -1;
} else { // need an argument
if (getopt.place >= 0 && getopt.place < args[getopt.ind].length)
getopt.arg = args[getopt.ind].substr(getopt.place);
else if (args.length <= ++getopt.ind) { // no arg
getopt.place = -1;
if (ostr.length > 0 && ostr.charAt(0) == ':') return ':';
return '?';
} else getopt.arg = args[getopt.ind]; // white space
getopt.place = -1;
++getopt.ind;
}
return optopt;
}
/************************
* Command line parsing *
************************/
var ver = "r19";
var c, thres_len = 50, thres_ratio = .8, thres_nm = 5, thres_frac = .33, dbg = false;
// parse command line options
while ((c = getopt(arguments, "vdl:n:f:")) != null) {
if (c == 'l') thres_len = parseInt(getopt.arg);
else if (c == 'n') thres_nm = parseInt(getopt.arg);
else if (c == 'd') dbg = true;
else if (c == 'f') thres_frac = parseFloat(getopt.arg);
else if (c == 'v') { print(ver); exit(0); }
}
if (arguments.length == getopt.ind) {
print("");
print("Usage: k8 typeHLA.js [options] <exon-to-contig.sam>\n");
print("Options: -n INT drop a contig if the edit distance to the closest gene is >INT ["+thres_nm+"]");
print(" -l INT drop a contig if its match too short ["+thres_len+"]");
print(" -f FLOAT drop inconsistent contigs if their length <FLOAT fraction of total length ["+thres_ratio.toFixed(2)+"]");
print(" -d output extra info for debugging");
print(" -v show version number");
print("");
print("Note: The output is TAB delimited with each GT line consisting of allele1, allele2,");
print(" #mismatches/gaps on primary exons, #mismatches/gaps on other exons and #exons");
print(" used in typing. If unusure, use the first GT line as the final genotype.\n");
exit(1);
}
/*********************************
* Read gene-to-contig alignment *
*********************************/
var file = new File(arguments[getopt.ind]);
var buf = new Bytes();
var re_cigar = /(\d+)([MIDSH])/g;
var len = {}, list = [], gcnt = [];
while (file.readline(buf) >= 0) {
var m, mm, line = buf.toString();
var t = line.split("\t");
var flag = parseInt(t[1]);
// SAM header
if (t[0].charAt(0) == '@') {
if (t[0] == '@SQ' && (m = /LN:(\d+)/.exec(line)) != null && (mm = /SN:(\S+)/.exec(line)) != null)
len[mm[1]] = parseInt(m[1]);
continue;
}
// parse gene name and exon number
var gene = null, exon = null;
if ((m = /^(HLA-[^\s_]+)_(\d+)/.exec(t[0])) != null) {
gene = m[1], exon = parseInt(m[2]) - 1;
if (gcnt[exon] == null) gcnt[exon] = {};
gcnt[exon][gene] = true;
}
if (gene == null || exon == null || t[2] == '*') continue;
// parse clipping and aligned length
var x = 0, ts = parseInt(t[3]) - 1, te = ts, clip = [0, 0];
while ((m = re_cigar.exec(t[5])) != null) {
var l = parseInt(m[1]);
if (m[2] == 'M') x += l, te += l;
else if (m[2] == 'I') x += l;
else if (m[2] == 'D') te += l;
else if (m[2] == 'S' || m[2] == 'H') clip[x==0?0:1] = l;
}
var tl = len[t[2]];
var left = ts < clip[0]? ts : clip[0];
var right = tl - te < clip[1]? tl - te : clip[1];
var qs, qe, ql = clip[0] + x + clip[1];
if (flag & 16) qs = clip[1], qe = ql - clip[0];
else qs = clip[0], qe = ql - clip[1];
var nm = (m = /\tNM:i:(\d+)/.exec(line)) != null? parseInt(m[1]) : 0;
list.push([t[2], gene, exon, ts, te, nm, left + right, qs, qe, ql]); // left+right should be 0 given a prefix-suffix alignment
}
buf.destroy();
file.close();
/**************************************
* Prepare data structures for typing *
**************************************/
// identify the primary exons, the exons associated with most genes
var pri_exon = [], n_pri_exons;
{
var cnt = [], max = 0;
// count the number of genes per exon and track the max
for (var e = 0; e < gcnt.length; ++e) {
if (gcnt[e] != null) {
var c = 0, h = gcnt[e];
for (var x in h) ++c;
cnt[e] = c;
max = max > c? max : c;
} else cnt[e] = 0;
}
warn("- Number of genes for each exon: [" +cnt.join(",") + "]");
// find primary exons
var pri_list = [];
for (var e = 0; e < cnt.length; ++e) {
if (cnt[e] == max) pri_list.push(e + 1);
pri_exon[e] = cnt[e] == max? 1 : 0;
}
warn("- List of primary exon(s): ["+pri_list.join(",")+"]");
n_pri_exons = pri_list.length;
}
// convert strings to integers (for performance)
var ghash = {}, glist = [], chash = {}, clist = [], elist = [];
for (var i = 0; i < list.length; ++i) {
if (ghash[list[i][1]] == null) {
ghash[list[i][1]] = glist.length;
glist.push(list[i][1]);
}
if (chash[list[i][0]] == null) {
chash[list[i][0]] = clist.length;
clist.push(list[i][0]);
}
var g = ghash[list[i][1]];
if (elist[g] == null) elist[g] = {};
elist[g][list[i][2]] = true;
}
// extract the 3rd and 4th digits
var gsub = [], gsuf = [];
for (var i = 0; i < glist.length; ++i) {
var m = /^HLA-[^*\s]+\*\d+:(\d+).*([A-Z]?)$/.exec(glist[i]);
gsub[i] = parseInt(m[1]);
gsuf[i] = /[A-Z]$/.test(glist[i])? 1 : 0;
}
/*************************************************
* Collect genes with perfect matches on primary *
*************************************************/
// collect exons with fully covered by perfect match(es)
var perf_exons = [];
function push_perf_exons(matches, last)
{
matches.sort(function(a, b) { return a[0]-b[0]; });
var cov = 0, start = 0, end = 0;
for (var i = 0; i < matches.length; ++i) {
if (matches[i][3] > 0) continue;
if (matches[i][0] <= end)
end = end > matches[i][1]? end : matches[i][1];
else cov += end - start, start = matches[i][0], end = matches[i][1];
}
cov += end - start;
if (matches[0][2] == cov) {
if (perf_exons[last[1]] == null) perf_exons[last[1]] = [];
//print(last[0], last[1], ghash[last[0]]);
perf_exons[last[1]].push(ghash[last[0]]);
}
}
var last = [null, -1], matches = [];
for (var i = 0; i < list.length; ++i) {
var li = list[i];
if (last[0] != li[1] || last[1] != li[2]) {
if (matches.length) push_perf_exons(matches, last);
matches = [];
last = [li[1], li[2]];
}
matches.push([li[7], li[8], li[9], li[5]+li[6]]);
}
if (matches.length) push_perf_exons(matches, last);
// for each gene, count how many primary exons are perfect
var pg_aux_cnt = {};
for (var e = 0; e < perf_exons.length; ++e) {
if (!pri_exon[e]) continue;
var pe = perf_exons[e];
var n = pe? pe.length : 0;
for (var i = 0; i < n; ++i) {
var g = pe[i];
if (pg_aux_cnt[g] == null) pg_aux_cnt[g] = 1;
else ++pg_aux_cnt[g];
}
}
// find genes with perfect matches on the primary exons
var perf_genes = [];
for (var g in pg_aux_cnt)
if (pg_aux_cnt[g] == n_pri_exons)
perf_genes.push(parseInt(g));
warn("- Found " +perf_genes.length+ " genes fully covered by perfect matches on the primary exon(s)");
var h_perf_genes = {};
for (var i = 0; i < perf_genes.length; ++i) {
if (dbg) print("PG", glist[perf_genes[i]]);
h_perf_genes[perf_genes[i]] = true;
}
/*******************
* Filter hit list *
*******************/
// reorganize hits to exons
function list2exons(list, flt_flag, perf_hash)
{
var exons = [];
for (var i = 0; i < list.length; ++i) {
var li = list[i], c = chash[li[0]], g = ghash[li[1]];
if (flt_flag != null && flt_flag[c] == 1) continue;
if (perf_hash != null && !perf_hash[g]) continue;
if (exons[li[2]] == null) exons[li[2]] = [];
exons[li[2]].push([c, g, li[5] + li[6], li[4] - li[3]]);
}
return exons;
}
var exons = list2exons(list), flt_flag = [], ovlp_len = [];
for (var c = 0; c < clist.length; ++c) flt_flag[c] = ovlp_len[c] = 0;
for (var e = 0; e < exons.length; ++e) {
if (!pri_exon[e]) continue;
var ee = exons[e];
var max_len = [];
for (var c = 0; c < clist.length; ++c) max_len[c] = 0;
for (var i = 0; i < ee.length; ++i) {
var l = ee[i][3] - ee[i][2];
if (l < 1) l = 1;
if (max_len[ee[i][0]] < l) max_len[ee[i][0]] = l;
}
for (var c = 0; c < clist.length; ++c) ovlp_len[c] += max_len[c];
for (var i = 0; i < ee.length; ++i)
flt_flag[ee[i][0]] |= (!h_perf_genes[ee[i][1]] || ee[i][2])? 1 : 1<<1;
}
var l_cons = 0, l_incons = 0;
for (var c = 0; c < clist.length; ++c)
if (flt_flag[c]&2) l_cons += ovlp_len[c];
else if (flt_flag[c] == 1) l_incons += ovlp_len[c];
warn("- Total length of contigs consistent/inconsistent with perfect genes: " +l_cons+ "/" +l_incons);
var attempt_perf = (l_incons/(l_cons+l_incons) < thres_frac);
/********************************
* Core function for genotyping *
********************************/
function type_gene(perf_mode)
{
if (perf_mode) {
var flt_list = [];
for (var c = 0; c < clist.length; ++c)
if (flt_flag[c] == 1) flt_list.push(clist[c]);
warn(" - Filtered " +flt_list.length+ " inconsistent contig(s): [" +flt_list.join(",")+ "]");
exons = list2exons(list, flt_flag, h_perf_genes);
} else exons = list2exons(list);
/***********************
* Score each genotype *
***********************/
// initialize genotype scores
var pair = [];
for (var i = 0; i < glist.length; ++i) {
pair[i] = [];
for (var j = 0; j <= i; ++j)
pair[i][j] = 0;
}
// these two arrays are used to output debugging information
var score = [], ctg = [];
function type_exon(e, gt_list)
{
function update_pair(x, m, is_pri)
{
var y, z;
y = (x>>14&0xff) + m < 0xff? (x>>14&0xff) + m : 0xff;
if (is_pri) z = (x>>22) + m < 0xff? (x>>22) + m : 0xff;
else z = x>>22;
return z<<22 | y<<14 | ((x&0x3fff) + (1<<6|is_pri));
}
score[e] = []; ctg[e] = [];
if (exons[e] == null) return;
var ee = exons[e], is_pri = pri_exon[e]? 1 : 0;
// find contigs and genes associated with the current exon
var ch = {}, gh = {};
for (var i = 0; i < ee.length; ++i)
if (elist[ee[i][1]][e] != null)
ch[ee[i][0]] = true, gh[ee[i][1]] = true;
var ga = [], ca = ctg[e];
for (var c in ch) ca.push(parseInt(c));
for (var g in gh) ga.push(parseInt(g));
var named_ca = [];
for (var i = 0; i < ca.length; ++i) named_ca.push(clist[ca[i]]);
warn(" - Processing exon "+(e+1)+" (" +ga.length+ " genes; " +ca.length+ " contigs: [" +named_ca.join(", ")+ "])...");
// set unmapped entries to high mismatch
var sc = score[e];
for (var k = 0; k < ga.length; ++k) {
var g = ga[k];
if (sc[g] == null) sc[g] = [];
for (var i = 0; i < ca.length; ++i)
sc[g][ca[i]] = 0xff;
}
// convert representation again and compute max_len[]
var max_len = [];
for (var i = 0; i < ee.length; ++i) {
var c = ee[i][0], g = ee[i][1];
if (gh[g] == null || ch[c] == null) continue;
sc[g][c] = sc[g][c] < ee[i][2]? sc[g][c] : ee[i][2];
if (max_len[c] == null) max_len[c] = 0;
max_len[c] = max_len[c] > ee[i][3]? max_len[c] : ee[i][3];
}
// drop mismapped contigs
var max_max_len = 0;
for (var k = 0; k < ca.length; ++k)
max_max_len = max_max_len > max_len[ca[k]]? max_max_len : max_len[ca[k]];
var dropped = [];
for (var k = 0; k < ca.length; ++k) {
var min = 0x7fffffff, c = ca[k];
for (var i = 0; i < ga.length; ++i) {
var g = ga[i];
min = min < sc[g][c]? min : sc[g][c];
}
dropped[c] = min > thres_nm? true : false;
if (max_len[c] < thres_len && max_len[c] < thres_ratio * max_max_len) dropped[c] = true;
if (dropped[c]) warn(" . Dropped low-quality contig " +clist[c]+ " (minNM=" +min+ "; maxLen=" +max_len[c]+ ")");
}
// fill the pair array
if (gt_list == null) {
for (var i = 0; i < ga.length; ++i) {
var m = 0, gi = ga[i], g1 = sc[gi];
// homozygous
for (var k = 0; k < ca.length; ++k) {
var c = ca[k];
if (!dropped[c]) m += g1[c];
}
pair[gi][gi] = update_pair(pair[gi][gi], m, is_pri);
// heterozygous
for (var j = i + 1; j < ga.length; ++j) {
var gj = ga[j], g2 = sc[gj], m = 0, a = [0, 0];
for (var k = 0; k < ca.length; ++k) {
var c = ca[k];
if (!dropped[c]) {
m += g1[c] < g2[c]? g1[c] : g2[c];
++a[g1[c]<g2[c]? 0:1];
}
}
if (a[0] == 0 || a[1] == 0) m = 0xff; // if all contigs are assigned to one gene, it is not good
if (gi < gj) pair[gj][gi] = update_pair(pair[gj][gi], m, is_pri);
else pair[gi][gj] = update_pair(pair[gi][gj], m, is_pri);
}
}
} else {
var tmp_pairs = [], min = 0xff;
for (var i = 0; i < gt_list.length; ++i) {
var gt = gt_list[i], m = 0;
var g1 = sc[gt[0]], g2 = sc[gt[1]], a = [0, 0];
if (g1 == null || g2 == null) continue;
if (gt[0] == gt[1]) {
for (var k = 0; k < ca.length; ++k) {
var c = ca[k];
if (!dropped[c]) m += g1[c];
}
} else {
var a = [0, 0];
for (k = 0; k < ca.length; ++k) {
var c = ca[k];
if (!dropped[c]) {
m += g1[c] < g2[c]? g1[c] : g2[c];
++a[g1[c]<g2[c]? 0:1];
}
}
if (a[0] == 0 || a[1] == 0) m = 0xff;
}
tmp_pairs.push([gt[0], gt[1], m]);
min = min < m? min : m;
}
if (min < 0xff) {
for (var i = 0; i < tmp_pairs.length; ++i) {
var t = tmp_pairs[i];
pair[t[0]][t[1]] = update_pair(pair[t[0]][t[1]], t[2], is_pri);
}
} else warn(" . Skipped exon " +(e+1)+ " as the assembly may be incomplete");
}
}
// type primary exons
warn(" - Processing primary exon(s)...");
for (var e = 0; e < exons.length; ++e)
if (pri_exon[e]) type_exon(e);
// generate the list of best genotypes on primary exons
var min_nm_pri = 0x7fffffff;
for (var i = 0; i < glist.length; ++i)
for (var j = 0; j <= i; ++j)
if ((pair[i][j]&63) == n_pri_exons)
min_nm_pri = min_nm_pri < pair[i][j]>>22? min_nm_pri : pair[i][j]>>22;
var gt_list = [];
for (var i = 0; i < glist.length; ++i)
for (var j = 0; j <= i; ++j)
if ((pair[i][j]&63) == n_pri_exons && pair[i][j]>>22 == min_nm_pri)
gt_list.push([i, j]);
warn(" - Collected " +gt_list.length+ " top genotypes on the primary exon(s); minimal edit distance: " +min_nm_pri);
// type other exons
warn(" - Processing other exon(s)...");
for (var e = 0; e < exons.length; ++e)
if (!pri_exon[e]) type_exon(e, gt_list);
/*****************************
* Choose the best genotypes *
*****************************/
// genotyping
var min_nm = 0x7fffffff;
for (var i = 0; i < glist.length; ++i)
for (var j = 0; j <= i; ++j)
if ((pair[i][j]&63) == n_pri_exons)
min_nm = min_nm < pair[i][j]>>14? min_nm : pair[i][j]>>14;
var out = [];
for (var i = 0; i < glist.length; ++i)
for (var j = 0; j <= i; ++j)
if ((pair[i][j]&63) == n_pri_exons && pair[i][j]>>14 <= min_nm + 1)
out.push([pair[i][j]>>14, pair[i][j]>>6&0xff, i, j, (gsuf[i] + gsuf[j])<<16|(gsub[i] + gsub[j])]);
out.sort(function(a, b) { return a[0]!=b[0]? a[0]-b[0] : a[1]!=b[1]? b[1]-a[1] : a[4]!=b[4]? a[4]-b[4] : a[2]!=b[2]? a[2]-b[2] : a[3]-b[3]});
return out;
}
/**********************
* Perform genotyping *
**********************/
warn("- Typing in the imperfect mode...");
var rst = type_gene(false);
if (attempt_perf) {
warn("- Typing in the perfect mode...");
var rst_perf = type_gene(true);
warn("- Imperfect vs perfect mode: [" +(rst[0][0]>>8&0xff)+ "," +(rst[0][0]&0xff)+ "] vs [" +(rst_perf[0][0]>>8&0xff)+ "," +(rst_perf[0][0]&0xff)+ "]");
if (rst_perf[0][0] < rst[0][0]) {
warn("- Chose the result from the perfect mode");
rst = rst_perf;
} else warn("- Chose the result from the imperfect mode");
} else warn("- Perfect mode is not attempted");
/**********
* Output *
**********/
for (var i = 0; i < rst.length; ++i)
print("GT", glist[rst[i][3]], glist[rst[i][2]], rst[i][0]>>8&0xff, rst[i][0]&0xff, rst[i][1]);

43
extras/typeHLA.sh 100755
View File

@ -0,0 +1,43 @@
#!/bin/bash
is_ctg=0
if [ $# -gt 1 ] && [ $1 == '-A' ]; then
is_ctg=1
shift
fi
if [ $# -lt 2 ]; then
echo "Usage: $0 [-A] <prefix> <gene>"
exit 1
fi
preres="resource-human-HLA"
root=`dirname $0`
pre=$1.$2
if [ $is_ctg -eq 0 ]; then
echo "** De novo assembling..." >&2
len=`$root/seqtk comp $pre.fq | awk '{++x;y+=$2}END{printf("%.0f\n", y/x)}'`
$root/fermi2.pl unitig -f $root/fermi2 -r $root/ropebwt2 -t2 -l$len -p $pre.tmp $pre.fq > $pre.tmp.mak
make -f $pre.tmp.mak
cp $pre.tmp.mag.gz $pre.mag.gz
else
rm -f $pre.tmp.mag.gz
ln -s $pre.fq $pre.tmp.mag.gz
fi
echo "** Selecting contigs overlapping target exons..." >&2
(ls $root/$preres/HLA-ALT-idx/*.fa.bwt | sed s,.bwt,, | xargs -i $root/bwa mem -t2 -B1 -O1 -E1 {} $pre.tmp.mag.gz 2>/dev/null) | grep -v ^@ | sort -k3,3 -k4,4n | gzip > $pre.tmp.ALT.sam.gz
$root/k8 $root/typeHLA-selctg.js $2 $root/$preres/HLA-ALT-exons.bed $pre.tmp.ALT.sam.gz | $root/seqtk subseq $pre.tmp.mag.gz - | gzip -1 > $pre.tmp.fq.gz
echo "** Mapping exons to de novo contigs..." >&2
$root/bwa index -p $pre.tmp $pre.tmp.fq.gz 2>/dev/null
$root/seqtk comp $root/$preres/HLA-CDS.fa | cut -f1 | grep ^$2 | $root/seqtk subseq $root/$preres/HLA-CDS.fa - | $root/bwa mem -aD.1 -t2 $pre.tmp - 2>/dev/null | gzip -1 > $pre.sam.gz
echo "** Typing..." >&2
$root/k8 $root/typeHLA.js $pre.sam.gz > $pre.gt
# delete temporary files
rm -f $pre.tmp.*
[ $is_ctg -eq 1 ] && rm -f $pre.mag.gz